103 Colors That Start With I (Names, Hex, RGB, CMYK)

Colorful symbols and white box with text saying colors that start with i

Compared to some of the other letters in the alphabet, the list of colors beginning with the letter I is relatively short. Many of the colors listed here are variations of another shade, which means that you’re going to see lots of colors with similar names despite their different appearances. However, what they lack in originality, they certainly make up for in vibrant color.

List of Colors That Start With I

Here’s a list of colors that start with the letter I, including names, Hex, RGB, and CMYK codes.

I

The color “I” may be difficult to describe from a grammatical perspective, but from a color perspective, it’s quite distinctive. A warm shade of dark red with strong gray and brown undertones, this color has a distinctly purple appearance due to the slight hint of blue running beneath the surface of the red that makes up the bulk of its hue.

I
Hex #7A2031 
RGB 122, 32, 49
CMYK 0, 74, 60, 52

I Spy

“I Spy” is a popular children’s game, designed to help pass the time on road trips or other long and otherwise boring routines. As a color, however, I Spy is hardly boring at all—a careful mix of off-white with quiet blue and green undertones to brighten the overall appearance and give the hint of something hiding just beneath the surface.

I Spy
Hex #E6F2EA 
RGB 230, 242, 234
CMYK 5, 0, 3, 5

Ibiza

Located off the eastern coast of Spain, the island of Ibiza is renowned around the world for its sparkling nightlife and summer club scene, although there are plenty of more family-friendly adventures to be found on the island. As a color, Ibiza is a deep, dark shade of purple with warm red undertones that captures the fast-paced excitement and rich potential for a good time that the island holds.

Ibiza
Hex #430D65 
RGB 67, 13, 101
CMYK 34, 87, 0, 60

Ibiza Lights

Related to the previous entry, Ibiza Lights starts with an Ibiza purple base and lightens it out considerably in order to create a brighter, softer shade of light purple-pink. This color pays homage to the glow of the neon lights that can be found at various establishments around the island of Ibiza.

Ibiza Lights
Hex #FC96FF 
RGB 252, 150, 255
CMYK 1, 41, 0, 0

Ice

As a water-based compound, ice doesn’t typically have a color beyond what little pigmentation may be afforded by various suspended salts or minerals. As a color, however, Ice is a cool, crisp shade of blue with the slightest hint of green that keeps the overall shade from looking too harsh or clinical.

Ice
Hex #DDF9F1 
RGB 221, 249, 241
CMYK 11, 0, 3, 2

Ice/Light Ice Blue

Despite its similar name, Ice/Light Blue starts with a pale or Sky Blue base before tempering the shade with more of a white and blue-white undertone. The end result is a very pale shade of light blue that still has some brighter green notes running beneath the surface to help lighten the overall shade and give it a sense of vibrancy and energy.

Ice/Light Ice Blue
Hex #B4DDF9 
RGB 180, 221, 249
CMYK 28, 11, 0, 2

Ice Blue

Ice Blue starts in the same general area as Ice/Light Blue, but dials up the blue or cyan values to create a shade of blue that’s a lot more intense. While Ice Blue still has enough of a white overlay to earn its “icy” name, it still comes across as a much warmer color than the previous entry on this list.

Ice Blue
Hex #81D1EC 
RGB 129, 209, 236
CMYK 45, 11, 0, 7 

Ice Cold

Ice Cold, on the other hand, does away with most of the brighter, sunnier blue shades to lean more heavily into a green-blue or off-white shade with strong green undertones. It still has some of the same light blue or ice blue notes, but Ice Cold is much closer in appearance to traditional or “true” Ice than it is to an Ice Blue shade.

Ice Cold
Hex #B1F4E7 
RGB 177, 244, 231
CMYK 27, 0, 5, 4

Ice Cold 2

This second variation on Ice Cold actually ups the chill for a cooler, crisper overall appearance. By increasing the gray or key values, Ice Cold 2 takes on a much colder appearance than the already chilly Ice Cold, creating a more neutral or clinical shade with only some quiet blue and green undertones.

Ice Cold 2
Hex #AFE3D6 
RGB 175, 227, 214
CMYK 23, 0, 6, 11

Iceberg

There are a couple of iceberg-themed names on this list, but Iceberg is probably the closest in shade to an actual iceberg. This cool shade of off-white draws its inspiration from the massive ice blocks that float freely in the open water—referenced in this color by the slight blue and green undertones that temper the otherwise stark shade.

Iceberg
Hex #DAF4F0 
RGB 218, 244, 240
CMYK 11, 0, 2, 4

Iceberg 2

Especially as compared to “true” Iceberg, Iceberg 2 is a significantly darker and more intense shade of deep sky blue. Iceberg 2 carries a hint of gray beneath the surface, but other than that slight concession to coolness, it’s a bright shade with bold sky blue notes and a touch of green for added brightness.

Iceberg 2
Hex #71A6D2 
RGB 113, 166, 210
CMYK 46, 21, 0, 18

Iceberg White

Iceberg White hearkens back to the more traditional ice-themed appearance of Iceberg, but it bleeds out a little bit more of the color. The end result is a dark blue-green shade of off-white with an almost gray tint to its overall appearance, thanks to the relative lack of any other colors that would make it appear brighter or more cheerful.

Iceberg White
Hex #CAE1D9 
RGB 202, 225, 217
CMYK 10, 0, 4, 12

Icebreaker

Although the name may make you think of party games or small candies, Icebreaker draws its inspiration from the actual icebreaker class of ship. Designed to cut a path through frozen waterways in order to provide safe passage for other ships, icebreaker vessels are strong, sturdy ships with a tough exterior. As a color, Icebreaker echoes the strength and durability of these ships with its steady, unwavering gray appearance.

Icebreaker
Hex #A9B7C9 
RGB 169, 183, 201
CMYK 16, 9, 0, 21

Iced Tea

Iced Tea is a warm red shade with some brighter yellow and gold-brown undertones. While iced tea can technically come in a wide range of colors, one of the most popular varieties is black tea—which, when chilled and served with ice, often takes on a very similar color to the shade that bears its name.

Iced Tea
Hex #992108 
RGB 153, 33, 8
CMYK 0, 78, 95, 40

Icon

Icon is a stark shade of very dark green with some crisp, almost metallic brown undertones. The color draws its inspiration from the religious artwork of the Byzantine Empire, which often used deep, dramatic shades like this one to give life to traditional depictions of the saints—often referred to as icons.

Icon
Hex #2E382D 
RGB 46, 56, 45
CMYK 18, 0, 20, 78

Icterine

The word “icterine” is derived from the Ancient Greek word that literally meant “jaundiced”. Despite its grim origin, however, the color Icterine is a bright, cheerful shade of sunny yellow with a warm golden undertone and a pleasant disposition overall. A few species of yellow bird owe their names to this particular shade, including the bright yellow icterine warbler and the equally cheerful icterine greenbull.

Icterine
Hex #FCF75E 
RGB 252, 247, 94
CMYK 0, 2, 63, 1

Icy White

The last of the ice-themed name on this list, Icy White steers clear of the green undertones we saw earlier in order to present a simple, no-nonsense shade of white with only the slightest hint of a blue undertone to remind the viewer of a cold winter day—and to keep the shade from appearing as a standard white shade.

Icy White
Hex #E3F3F2 
RGB 227, 243, 242
CMYK 7, 0, 0, 5

Iguana Green

Iguana lizards are found throughout Mexico, South and Central America, and the Caribbean and typically range in color from pale brown to vivid. By far the most popular variety, however, is the green iguana—a medium-sized lizard with a yellow-green skin that closely matches the appearance of this warm green shade.

Iguana Green
Hex #71BC78 
RGB 113, 188, 120
CMYK 40, 0, 36, 26

Iko Iko

“Iko Iko” is the name of a famous New Orleans song that tells of a collision and confrontation between two opposing groups of Mardis Gras revelers. As a color, Iko Iko captures some of the heat and excitement that the song conveys while still remaining a muted, relatively reserved shade of dark greenish brown with warmer yellow undertones.

Iko Iko
Hex #B3AB6E 
RGB 179, 171, 110
CMYK 0, 4, 39, 30

Illuminating Emerald

As the name might suggest, Illuminating Emerald is an Emerald Green variation, which means that it’s a medium dark shade of soft green with some strong blue undertones. The “illuminating” part of the name comes from the brighter gold or yellow-green undertones, which add a sense of lightness and a soft sort of glow to the shade’s overall appearance.

Illuminating Emerald
Hex #319177 
RGB 49, 145, 119
CMYK 66, 0, 18, 43

Illusion

Illusion is a soft pink shade with some warmer yellow and orange undertones to round out the color and give it a gently blushing overall appearance. Most “mystery”-themed names tend to have strong pink or purple hues, and Illusion is no exception to that general rule with its warm pink hue and slight hints of purple running beneath the surface.

Illusion
Hex #F6A4C9 
RGB 246, 164, 201
CMYK 0, 33, 18, 4

Imagine

No matter what color you’re imagining when you hear the word “imagine”, it’s probably not what the color Imagine actually looks like. Imagine is a muted shade of medium dark gray with some warmer magenta and purple undertones to create an aged or antique appearance—a solid, serviceable shade that still shimmers with a world of imagined possibilities.

Imagine
Hex #A39894 
RGB 163, 152, 148
CMYK 0, 7, 9, 36

Imperial

Imperial is actually the first of a handful of color names that draw inspiration from the same source. In ancient Rome, the dark purple dye that created this color was extremely rare, extremely expensive, and reserved only for the Roman emperor. Imperial is a deep purple shade with strong red undertones that pays homage to the wealth, might, and power of that ancient civilization.

Imperial
Hex #602F6B 
RGB 96, 47, 107
CMYK 10, 56, 0, 58

Imperial Blue

Imperial Blue starts with standard Imperial as a base, but it dials up the blue value and mutes some of the red undertones. The end result is an extremely dark “royal” blue that still carries some of the rich purple notes of a traditional Imperial shade in order to still provide a sense of wealth and influence.

Imperial Blue
Hex #002395 
RGB 0, 35, 149
CMYK 100, 77, 0, 42

Imperial Purple

Imperial Purple is much closer to the traditional Imperial shade. The unique reddish blue shade is derived from the mucus secretions of a very specific snail that lives in a very specific part of the Mediterranean Sea. As a result, it’s hardly surprising that the deep purple-red shade was so difficult to manufacture—and, consequently, so expensive—for most of the world’s history!

Imperial Purple
Hex #66023C 
RGB 102, 2, 60
CMYK 0, 98, 41, 60

Imperial Red

Imperial Red may share the same name as the previous few entries, but it actually derives from a wildly different source. Imperial Red is as close as we can get to the Imperial Standard of Napoleon I—a golden eagle on a white field imposed over a red square and a blue border. As a specific color, this bold shade of bright red dates all the way back to 1914!

Imperial Red
Hex #ED2939 
RGB 237, 41, 57
CMYK 0, 83, 76, 7

Impulse

Impulse is another dark purple shade with a muted tint and a slightly aged overall appearance. As a color, Impulse is primarily a purple-gray with some slight blue undertones that keep it from looking either too brown or too grimly gray.

Impulse
Hex #894961 
RGB 137, 73, 97
CMYK 0, 47, 29, 46

In The Mauve

You’ve heard of “in the know”, so now it’s time for In the Mauve! In the Mauve, as the name might suggest, is a pale Mauve variant—a light purple shade inspired by and named after the mallow flower that grows throughout Europe. While any pale violet can be classified as a Mauve, In the Mauve is an extremely light shade with just a dash of violet color to brighten its appearance.

In The Mauve
Hex #CECBD1 
RGB 206, 203, 209
CMYK 1, 3, 0, 18

Inch Worm

The name “inchworm” actually applies to the caterpillars of a large family of moths as opposed to one specific species. Known for their measured, inching way of crawling, these little critters are usually found in a bright greenish yellow shade that’s reflected here in Inch Worm, the color that shares the same name.

Inch Worm
Hex #B0E313 
RGB 176, 227, 19
CMYK 22, 0, 92, 11

Inchworm

As compared to the previous entry, Inchworm is a little bit paler than Inch Worm. While it obviously draws its inspiration from the same creepy-crawly source, Inch Worm turns down the yellow value and the gray value at the same time to create a shade that seems brighter and more cheerful than its predecessor.

Inchworm
Hex #B2EC5D 
RGB 178, 236, 93
CMYK 25, 0, 61, 7

Incognito

Someone who’s traveling incognito will go to any lengths to avoid being recognized, but it seems a bit unfair to describe the color Incognito as unrecognizable. Instead, Incognito is a warm shade of brown with some slightly brighter red and yellow undertones—a sturdy, dependable shade that works well as a background or complementary color.

Incognito
Hex #8E7C6E 
RGB 142, 124, 110
CMYK 0, 13, 23, 44

Indanthrene

Also known as “indanthrone blue”, indanthrene is a deep blue dye, introduced in 1901, that serves as an organic indigo compound. As a color, Indanthrene is every bit as dark as the compound that gives it its name—a deep, intense shade of dark blue with some very subtle red or violet-red undertones running just beneath the surface to round it out.

Indanthrene
Hex #020D4D 
RGB 2, 13, 77
CMYK 97, 83, 0, 70

Independence

Independence may be a difficult concept to sum up, but the color that shares its name isn’t nearly as complicated. Independence is a dark shade of steady gray with strong blue undertones that combine with the gray to create a bold, no-nonsense shade of deep grayish blue that’s ready to weather whatever test life throws its way.

Independence
Hex #4C516D 
RGB 76, 81, 109
CMYK 30, 26, 0, 57

India Green

Obviously there are many shades of green that can be found in the Indian subcontinent, but India Green has a much more lofty origin. India Green is the specific shade of green found on the national flag of India—a deep yellow-green shade that represents the fertility and prosperity of the nation in question.

India Green
Hex #138808 
RGB 19, 136, 8
CMYK 86, 0, 94, 47

Indian Ink

Despite what the name would have you believe, Indian or India ink was actually first invented in China around the 3rd millennium BCE. Because English merchants were only exposed to the ink through their trade with India, they assumed it had originated in that region and named it accordingly. No matter the origin of its name, the color Indian Ink is a deep black shade with a glossy finish and a weighty sense of visual impact.

Indian Ink
Hex #232732 
RGB 35, 39, 50
CMYK 30, 22, 0, 80

Indian Khaki

From a technical perspective, all khaki is Indian khaki, since the specific fabric and overall appearance originated in northwest India in the 1800s. As a color, however, Indian Khaki refers to this specific shade of medium dark tan-brown with bright yellow undertones and a sturdy, dependable overall appearance.

Indian Khaki
Hex #C3B091 
RGB 195, 176, 145
CMYK 0, 10, 26, 24

Indian Red

Indian Red is a moderately dark red shade with some rusty red-brown undertones that help to give a weathered, slightly faded overall appearance to this shade. Indian Red takes its name from the red soil found throughout India—a soil that owes its color to the high concentration of ferric oxide found within the natural mix.

Indian Red
Hex #CD5C5C 
RGB 205, 92, 92
CMYK 0, 55, 55, 20

Indian Tan

Upon first hearing the name, you may expect Indian Tan to be similar in shade to Indian Khaki. Instead, Indian Tan is an extremely deep shade of brown that starts with a traditional Tan base before dramatically increasing the gray-black key values to create a dark brown shade with only a hint of reddish brown running beneath the surface.

Indian Tan
Hex #4D1E01 
RGB 77, 30, 1
CMYK 0, 61, 99, 70

Indian Turquoise

While the previous few entries referred to the subcontinent of India, Indian Turquoise is named for the turquoise stones used by the native peoples of North and South America—often referred to as American Indians. Indian Turquoise is a pale blue with some soft golden undertones that draws its inspiration from the stone of the same name.

Indian Turquoise
Hex #9BCAD4 
RGB 155, 202, 212
CMYK 27, 5, 0, 17

Indian Yellow

Going back to the previous definition of “Indian”, Indian Yellow is named after the pigment that featured heavily in the artwork and architecture of the Mughal Empire in India. The color itself is a bold orange-yellow shade that was renowned for its vivid hue and luminescent qualities, especially when viewed outdoors or in direct sunlight.

Indian Yellow
Hex #E3A857 
RGB 227, 168, 87
CMYK 0, 26, 62, 11

Indigo (Electric)

The name “Indigo” has long been applied to many different shades of deep blue, and we’ll look at several of those variants in the entries that follow. Our first shade of Indigo, however, is this shade of vivid royal blue with a deeper purple or violet undertone running beneath the surface and lending a touch of heat.

Indigo (Electric)
Hex #6F00FF 
RGB 111, 0, 255
CMYK 56, 100, 0, 0

Indigo 2

All Indigo shades are inspired by the dye of antiquity, but Indigo 2 and Indigo 5 are probably the closest to the original appearance of that dye. Indigo 2 is a deep, dark shade of blue with strong black and gray undertones and a steady, intense overall appearance that closely mimics the ancient dye that gives this color its name.

Indigo 2
Hex #00416A 
RGB 0, 65, 106
CMYK 100, 39, 0, 58

Indigo 3

Indigo 3, on the other hand, is a significantly lighter shade of blue with some bright violet or purple-red undertones running beneath the surface. This specific shade of indigo tends to be the one used for computer design or traditional artwork, since the color looks a lot brighter overall and won’t wash out other colors, the way a deeper indigo would do.

Indigo 3
Hex #4F69C6 
RGB 79, 105, 198
CMYK 60, 47, 0, 22

Indigo 4

Similarly, Indigo 4 starts with Indigo 3 as its base and decreases the key values even further to create a warm, bright shade of blue with only the slightest hint of a deeper purple or gray shade. Lighter shades of indigo tend to be closer to the color of light typically described as indigo—in other words, a bright, vivid color that’s only slightly darker or more purple than a traditional blue.

Indigo 4
Hex #5D76CB 
RGB 93, 118, 203
CMYK 54, 42, 0, 20

Indigo 5

Finally, Indigo 5 is a throwback to the extremely dark shades of indigo dye. Traditional indigo dye is made from the leaves of a specific flowering plant that grows throughout Asia as an important crop. Most modern indigo dyes, however, use synthetic materials to make up the deep blue-black shade found in most clothing stores—specifically, in the blue jeans section!

Indigo 5
Hex #233067 
RGB 35, 48, 103
CMYK 66, 53, 0, 60

Indigo Dye

As mentioned above, traditional Indigo Dye is much darker than the color we tend to think of as indigo. It was originally developed for use with cotton fabric, and the traditional methods of making this dye are still in use today. As a color, Indigo Dye shares the same bold, royal blue appearance as the dried pigment that’s used to make the dye itself.

Indigo Dye
Hex #091F92 
RGB 9, 31, 146
CMYK 94, 79, 0, 43

Indigo Purple

Indigo Purple starts with a traditional Indigo base and dials up the intensity—and the red values—in order to create a deep shade of dark purple that still retains strong blue undertones as a nod to the dramatic dye that gives it its name.

Indigo Purple
Hex #4B0082 
RGB 75, 0, 130
CMYK 42, 100, 0, 49

Indochine

Indochine is the French word for Indochina, the nineteenth century name for the region typically referred to today as Mainland Southeast Asia or the Indochinese Peninsula. As a color, Indochine is a warm shade of brown with strong orange undertones that seeks to capture the warmth, vibrancy, and fast-paced energy that the many nations on the Indochinese Peninsula often provide.

Indochine
Hex #C26B03 
RGB 194, 107, 3
CMYK 0, 45, 98, 24

Indochine Brown

Indochine Brown starts with an Indochine base before significantly muting the red and orange undertones and increasing the gray values in order to create a more stately, muted variation of the otherwise high-intensity color. The end result is a deep shade of medium dark brown that still retains some of that characteristically orange-red hue.

Indochine Brown
Hex #9C5B34 
RGB 156, 91, 52
CMYK 0, 42, 67, 39

Industrial Silver

Industrial Silver is a solid, no-nonsense shade of gray that carries the slightest hint of a metallic brown or brassy undertone. The “industrial” part of this color’s name serves as a nod to its primary use—if you’ve seen this color at all, you’ve most likely seen it in industrial plants or production facilities around the world.

Industrial Silver
Hex #7C7D79 
RGB 124, 125, 121
CMYK 1, 0, 3, 51

Infez

Despite its unusual name, Infez is actually a fairly standard turquoise variation—an equal mix of green and blue that results in a dark shade of Sea Foam Green. While Infez has slightly more green than a traditional turquoise, it’s still recognizable as a gentle shade of bluish green that fits in nicely alongside all other turquoise shades.

Infez
Hex #00AA88 
RGB 0, 170, 136
CMYK 100, 0, 20, 33

Infinity

Like “independence”, “infinity” is a heady topic that can be difficult to wrap the mind around. As a color, Infinity captures some of that endless expansion and drive to explore, and the end result is a deep shade of gray with subtle blue and magenta undertones that lend a hint of excitement to what would otherwise be a grimly nihilistic sort of color.

Infinity
Hex #6A7376 
RGB 106, 115, 118
CMYK 10, 3, 0, 54

Infra Red

As a color, Infra Red has almost nothing to do with infrared light—the wavelength of light too long to be seen with the human eye. Instead, Infra Red is a bright, cheerful shade of red with some strong orange-pink undertones that brighten the overall shade even further and push it slightly towards the Salmon color family.

Infra Red
Hex #FF496C 
RGB 255, 73, 108
CMYK 0, 71, 58, 0

Ink

We’ve already looked at India Ink, so now it’s time for just “plain” Ink—a deep shade of black with strong blue and purple undertones that are clearly visible even with the intense darkness of this shade as a whole. While ink can come in just about any color, odds are, when you think of grabbing an ink pen, this color is closest to what you had in mind.

Ink
Hex #000055 
RGB 0, 0, 85
CMYK 100, 100, 0, 67

Ink Atrament

The word “atramentum” usually refers to an extremely dark inky liquid. The ink that an octopus or some other cephalopod shoots out, for example, is sometimes described as atrament. Ink Atrament, then, is a shade of black that’s even darker than “true” Ink, with a smooth, liquid appearance that hearkens back to its earliest use in the days of ancient Rome.

Ink Atrament
Hex #111020 
RGB 17, 16, 32
CMYK 47, 50, 0, 87

Ink Green

As mentioned earlier, inks can come in a wide range of colors, even if black continues to be the most popular. The first of several inky names on this list, Ink Green takes a traditional dark green shade and dials up the gray-black values for an extremely dark shade of green that’s been significantly muted by the overwhelmingly inky-black undertones.

Ink Green
Hex #005500 
RGB 0, 85, 0
CMYK 100, 0, 100, 67

Ink Olive

Similarly, Ink Olive takes traditional Olive Green—a relatively pale mix of green, yellow, and brown—and mutes some of the blue and red red undertones in order to create a droll shade of green with a distinctly historical feel that manages to look even more muted than Ink Green does.

Ink Olive
Hex #555500 
RGB 85, 85, 0
CMYK 0, 0, 100, 67

Ink Purple

Continuing that inky trend, Ink Purple starts with a traditional purple base and increases the key values to create a dark, almost imperial shade of deep purple. If you look at the CMYK values for all of the ink-themed colors on this list, you’ll notice that each one has the same “K” value, which should serve as an indication of just how dark you should expect each inky name to be!

Ink Purple
Hex #550055 
RGB 85, 0, 85
CMYK 0, 100, 0, 67

Ink Red

Ink Red almost looks purple at first glance, thanks to the deep gray-black undertones that push this shade out of the red family and firmly into the “ink” family. The end result is a dark red shade with strong gray notes and not a single tempering blue or green note anywhere to be found.

Ink Red
Hex #550000 
RGB 85, 0, 0
CMYK 0, 100, 100, 67

Ink Teal

Finally, Ink Teal takes Teal Blue—already a slightly darker blue shade—and dials up the intensity to create a stately shade of dark blue with strong green undertones. Ink Teal is a dramatic, noble shade of bluish green that works well with other dramatic jewel tones or with softer neutral or off-white shades.

Ink Teal
Hex #005555 
RGB 0, 85, 85
CMYK 100, 0, 0, 67

Innocence

You may be expecting a lighter shade when you hear the name “innocence”, and Innocence is relatively light, but only as compared to the inky shades that came before it. At a glance, Innocence is a dark gray shade with some blue and yellow undertones that give it a softer green-gray overall appearance.

Innocence
Hex #6D7773 
RGB 109, 119, 115
CMYK 8, 0, 3, 53

Innuendo

Someone who speaks in innuendos and insinuations may have something to hide, and the color Innuendo reflects some of that coy nature and clever wordplay. Innuendo is a grayish purple shade with a hint of reddish brown lurking beneath the surface and giving a double meaning to what would otherwise be a straightforward shade of gray.

Innuendo
Hex #77696F 
RGB 119, 105, 111
CMYK 0, 12, 7, 53

Inside Back

Inside Back is another mix of gray and green that splits the difference between the two to create a unique blend of both. Overall, Inside Back is a medium dark gray with strong green and green-brown undertones that pairs nicely with other neutral or slightly off-neutral shades for both interior design and graphic design alike.

Inside Back
Hex #848E88 
RGB 132, 142, 136
CMYK 7, 0, 4, 44

Instinct

Instinct, on the other hand, is a far more straightforward shade of gray. While it does still have some extremely subtle blue and magenta undertones that combine to create a slightly purple tint to this shade, these softer colors are mostly outweighed by the visual impact of the strong gray overtones. The end result is a solid gray with only the slightest hint of a soft violet undertone.

Instinct
Hex #8C979D 
RGB 140, 151, 157
CMYK 11, 4, 0, 38

Interdimensional Blue

Interdimensional Blue, as the name might suggest, is a vivid shade of bright royal blue with enough of a purple or purple-red undertone to capture the excitement of interdimensional theories and speculation. The color’s overall appearance is that of a bold, dramatic blue shade with just enough lightness to keep from becoming too overwhelming.

Interdimensional Blue
Hex #360CCC 
RGB 54, 12, 204
CMYK 74, 94, 0, 20

International Klein Blue

International Klein Blue is an intense ultramarine shade that was first created by the artist Yves Klein, who went on to use the color in many of his pieces. Klein would often layer the color onto a canvas to create a visibly raised texture, which only added to the richness and intensity that the color itself already provided.

International Klein Blue
Hex #002FA7 
RGB 0, 47, 167
CMYK 100, 72, 0, 35

International Orange (Aerospace)

International Orange (Aerospace) is a bright shade of reddish orange that is most instantly recognizable as the color used in the specific uniforms that NASA astronauts wear during the ascent and entry portions of any space flight. The color itself is a vivid orange shade that’s a little bit darker than the suits typically used for high-altitude flights—although the first plane to break the sound barrier was also painted this specific shade of orange.

International Orange (Aerospace)
Hex #FF4F00 
RGB 255, 79, 0
CMYK 0, 69, 100, 0

International Orange (Engineering)

As compared to the Aerospace variant of International Orange, International Orange (Engineering) is a darker shade with much more of a red undertone, to the point where this shade is almost more accurately classified as a deep red with orange undertones. International Orange (Engineering) is often used by military contractors as well as by engineers in general.

International Orange (Engineering)
Hex #BA160C 
RGB 186, 22, 12
CMYK 0, 88, 94, 27

International Orange (Golden Gate Bridge)

Finally, International Orange (Golden Gate Bridge) is a variation on International Orange (Engineering) that was specifically designed to protect the Golden Gate Bridge from rust caused by the salty ocean spray or the heavy San Francisco Fog. The color itself is slightly lighter than Engineering orange while still being an intense orange-red shade.

International Orange (Golden Gate Bridge)
Hex #C0362C 
RGB 192, 54, 44
CMYK 0, 72, 77, 25

Intimate

Intimate is a dark, secretive, and, well, intimate shade of brown with some softer red and purple undertones that keep it from becoming too dark or oppressive as a result of its incredibly high gray-black key value.

Intimate
Hex #343C40 
RGB 52, 60, 64
CMYK 19, 6, 0, 75

Intrigue

Intrigue is a mysterious shade of reddish brown with some strong purple undertones that work with the bold red overtone in order to create a color that packs plenty of excitement and the promise of adventure into what would otherwise be a standard shade of brown.

Intrigue
Hex #814743 
RGB 129, 71, 67
CMYK 0, 45, 48, 49

Iris

The name “iris” has historically been applied to a wide range of blue and bluish purple colors, with some even applying the name to shades of pink! For our list, however, Iris refers to this warm shade of blue with strong purple undertones, inspired by the clear purple-blue color of the flower that shares its name.

Iris
Hex #5A4FCF 
RGB 90, 79, 207
CMYK 57, 62, 0, 19

Irish Coffee

As compared to “true” Coffee Brown, Irish Coffee is a lighter shade, thanks to the hints of Irish Cream that are mixed with a traditional coffee shade in order to create this color. The end result is a warm, sweet brown shade with a warmer yellow or golden brown undertone.

Irish Coffee
Hex #5F3D26 
RGB 95, 61, 38
CMYK 0, 36, 60, 63

Iroko

Native to the West Coast of tropical Africa, the Iroko tree is a massive hardwood tree that can live for well over five hundred years! The wood that the tree produces is a rich, dark shade of brown that requires no oil or varnish to continue to provide a lustrous finish, and it is that same deep color that gives this shade its name.

Iroko
Hex #433120 
RGB 67, 49, 32
CMYK 0, 27, 52, 74

Iron

There are a couple of Iron variants on this list, but this shade is the closest in appearance to the deep rusty red shade of iron ore, which typically takes on a deep brown color with some slight red undertones.

Iron
Hex #AA5546
RGB 170, 85, 70
CMYK 0, 50, 59, 33

Iron 2

Iron 2 is significantly lighter than “true” Iron, drawing its inspiration from the polished and processed iron typically seen in construction or engineering projects around the world. Iron 2 is closer in shade to an off-white variant, with only the slightest hint of reddish brown as a nod to its origins.

Iron 2
Hex #D4D7D9 
RGB 212, 215, 217
CMYK 2, 1, 0, 15

Iron 3

Similarly, Iron 3 builds upon Iron 2’s pale base to create a slightly more muted shade that’s been mellowed out with a touch of gray for a more metallic overall feeling.

Iron 3
Hex #CBCDCD 
RGB 203, 205, 205
CMYK 1, 0, 0, 20

Iron Bar

Despite Iron’s more technically accurate appearance, Iron Bar is closest in appearance to what we typically tend to picture when we think of iron—a solid, sturdy shade of gray with some lighter metallic undertones and a dependable overall finish that’s ready to stand the test of time.

Iron Bar
Hex #798B99 
RGB 121, 139, 153
CMYK 21, 9, 0, 40

Iron Brown

Iron Brown combines the slightly red undertones of “true” Iron with the steady gray of Iron Bar in order to create another impressively sturdy shade. In this instance, however, the predominantly brown shade still packs plenty of warmth thanks to its muted red and yellow undertones.

Iron Brown
Hex #6C615D 
RGB 108, 97, 93
CMYK 0, 10, 14, 58

Iron Ingot

When formed into ingots, crude iron or “pig iron” often takes on the extremely pale appearance that gives this color its name. In reality, it’s not so much of a color as it is a reflection of light off the surface of the dense metal, but the color comparison still holds true.

Iron Ingot
Hex #D8D8D8 
RGB 216, 216, 216
CMYK 0, 0, 0, 15

Iron Ore

In geology, iron ore is often mixed with ferric oxide, which we’ll see more of below. As a result, the rock in which iron ore is found often takes on a reddish brown appearance. As a color, Iron Ore reflects this soft red-brown shade with its orange and red undertones.

Iron Ore
Hex #D2AC8F 
RGB 210, 172, 143
CMYK 0, 18, 32, 18

Iron Oxide

The most well-known iron oxide is rust, but there are sixteen different iron oxides that form as a result of the interaction between iron and oxygen. All iron oxides have similar “earthy” shades, but as rust is the most well-known, Iron Oxide is clearly inspired by that distinctive shade of bright reddish brown.

Iron Oxide
Hex #B63730 
RGB 182, 55, 48
CMYK 0, 70, 74, 29

Iron Texture

Iron Texture builds off of the Iron Oxide base to create a deep shade of brown with only some subtle red undertones. The end result is a warm brown shade with a strong, sturdy overall appearance as a nod to the steady, dependable “texture” of iron ore.

Iron Texture
Hex #7E5342 
RGB 126, 83, 66
CMYK 0, 34, 48, 51

Ironbark

The name “ironbark” is often applied to a number of trees, but the one thing all of the different species have in common is their bark—a steady gray-brown colored bark that often is similar in appearance to the slag of iron ore. As a color, Ironbark is inspired by these various trees and the bark that shares its shade.

Ironbark
Hex #6D4D2C 
RGB 109, 77, 44
CMYK 0, 29, 60, 57

Ironsand

As the name might suggest, ironsand is sand with a high concentration of iron. Due to the high amounts of magnetite often found in the mix, ironsand often has an extremely dark gray-black color in addition to being attracted to magnets! The color Ironsand mimics that glossy black appearance for a crisp, metallic shade of black.

Ironsand
Hex #393735 
RGB 57, 55, 53
CMYK 0, 4, 7, 78

Ironside Gray

Ironside Gray is inspired by the uniforms of the Ironside cavalry unit during the English Civil War. It also shares a name with the colloquial term for the 1940 British armored car that went into production and saw plenty of action during the second World War. As a color, Ironside is a bold shade of dark gray with some subtle gray-brown undertones running throughout.

Ironside Gray
Hex #676662 
RGB 103, 102, 98
CMYK 0, 1, 5, 60

Ironstone

Ironstone is a sturdy shade of deep brown with some strong red undertones, inspired by the sedimentary rock of the same name. As a rock, ironstone is any stone with a high concentration of iron ore that can be used to produce commercial iron, which means that it often has the same rusty red color that gives this shade its name.

Ironstone
Hex #86483C 
RGB 134, 72, 60
CMYK 0, 46, 55, 47

Ironwood

Ironwood is a name given to a number of different trees and the woods they produce. From a technical perspective, ironwood is any wood that has a density heavier than that of water, which usually results in an exceptionally hard composition. As a color, ironwood, is a medium dark grayish brown shade with some warmer red-brown undertones to round out the overall shade.

Ironwood
Hex #A3948D 
RGB 163, 148, 141
CMYK 0, 9, 13, 36

Irresistible

Irresistible is a deep shade of pink with strong purple undertones and an exciting, intoxicating overall appearance. Whether you find this specific shade to be truly “irresistible” or not, there’s no denying that it’s a fast-paced, energetic, and visually compelling shade of dark purplish pink that more than earns its place on this list.

Irresistible
Hex #B3446C 
RGB 179, 68, 108
CMYK 0, 62, 40, 30

Isabelline

If you work with animals—particularly birds or horses—you may have heard the name “isabelline” before. Isabelline is a yellowish white shade of pale gray that is often used to describe the coats of horses or the feathers of birds, although it has also been historically used to describe clothing and dates all the way back to the year 1600.

Isabelline
Hex #F4F0EC 
RGB 244, 240, 236
CMYK 0, 2, 3, 4

Islamic Green

In the Quaran, the color green is often used to symbolize paradise, rest, and peace. Today, the color green has come to represent Islam or Islamic countries, and this specific shade of green can be found on several national flags with a Muslim-majority population. The color itself is a vivid shade of yellow green with a bright overall appearance.

Islamic Green
Hex #009000 
RGB 0, 144, 0
CMYK 100, 0, 100, 44

Island Spice

If you hear the words “island spice” you may be picturing more of a dark, exotic color. Instead, Island Spice draws its main inspiration from the sandy islands and windswept beaches found on many tropical islands around the world. The end result is a pale off-white shade with some warm yellow undertones to hint at the heat of the tropical sun.

Island Spice
Hex #FFFCEE 
RGB 255, 252, 238
CMYK 0, 1, 7, 0

Isobar

In meteorology, an isobar is a line that connects two places of equal atmospheric pressure during a specific window of time—typically derived from sea level and often seen during television weather reports. As a color, Isobar is a dark, intense shade of green that captures some of the pressure and ever-changing nature of a storm front moving in over the open ocean.

Isobar
Hex #374846 
RGB 55, 72, 70
CMYK 24, 0, 3, 72

Isobar 2

Unlike the previous entry, Isobar 2 refers to a specific company instead of a meteorological measurement. Isobar 2 is the officially branded color of an innovation firm—a bold shade of dynamic orange with strong red undertones to capture the growth potential and excitement that this company seeks to embrace.

Isobar 2
Hex #F74902 
RGB 247, 73, 2
CMYK 0, 70, 99, 3

Italian Sky Blue

Italian Sky Blue, as the name might suggest, is a Sky Blue variant with a bit of a twist. A little bit paler than traditional Sky Blue, Italian Sky Blue goes with a lighter, sunnier overall appearance in order to pay homage to the brilliant skies found throughout the Italian peninsula that have helped that country grow and thrive for thousands of years.

Italian Sky Blue
Hex #B2FFFF 
RGB 178, 255, 255
CMYK 30, 0, 0, 0

Ivanhoe

Ivanhoe is a deep shade of dark royal blue with some bold yellow and red undertones to help create a romantic, adventurous color. Inspired by the eponymous hero of Sir Walter Scott’s 1820 novel, Ivanhoe is a dashing, daring color that’s every bit as heroic as its namesake.

Ivanhoe
Hex #3B4C57 
RGB 59, 76, 87
CMYK 32, 13, 0, 66

Ivory

The first of several Ivory variations on this list, “true” Ivory is a pale, creamy shade of off-white with just a touch of yellow to keep it from presenting as a pure white shade. Ivory draws its inspiration from the tusks and teeth of various animals found around the world. While elephant ivory and many other “natural” sources of ivory have been outlawed, the color Ivory is still a popular choice today!

Ivory
Hex #FFFFF0 
RGB 255, 255, 240
CMYK 0, 0, 6, 0

Ivory 2

As compared to the first Ivory shade, Ivory 2 is slightly darker, even if the yellow value remains unchanged from the previous entry. If the first Ivory was the color of “real” ivory, then Ivory 2 is a better match for ivory objects that have grown darker or more weathered since their original creation, taking on a slightly yellow and slightly gray overall appearance with time.

Ivory 2
Hex #EEEEE0
RGB 238, 238, 224
CMYK 0, 0, 6, 7

Ivory 3

Continuing the trend from the previous two entries, Ivory 3 is just a little bit darker than Ivory 2. The only real change between the two is a higher black or key value, which mutes out the yellow undertones and gives the overall shade more of a green hue as a result of the tempered gray undertones.

Ivory 3
Hex #CDCDC1 
RGB 205, 205, 193
CMYK 0, 0, 6, 20

Ivory 4

The last shade of “true” Ivory on this list, Ivory 4 is noticeably darker than the colors that came before it. Ivory 4 is a medium dark shade of gray with some subtle yellow or even green undertones that give it a sense of aged history or antique visual impact.

Ivory 4
Hex #8B8B83 
RGB 139, 139, 131
CMYK 0, 0, 6, 45

Ivory Black

Ivory Black may seem like a bit of an oxymoron at first glance, since Ivory is famously a pale or white shade. Ivory Black, however, is an extremely dark shade of gray—in other words, it’s a standard black shade that’s been tempered with the smallest amount of Ivory possible in order to lend a touch of light to this otherwise dark shade.

Ivory Black
Hex #463D36 
RGB 70, 61, 54
CMYK 0, 13, 23, 73

Ivy Green

Ivy Green is another dark shade of green that could almost pass for black in a certain light. Starting with a standard dark green base, Ivy Green dials up the blue and gray values to create a deep green shade with only the slightest hint of yellow to elevate the color and keep it from sliding all the way into a pure black shade.

Ivy Green
Hex #23352D 
RGB 35, 53, 45
CMYK 34, 0, 15, 79

Ivy Green 2

As compared to the previous entry, the second shade of Ivy Green is a much brighter color overall. Ivy Green 2 is a relatively warm shade of dark green with some brighter yellow undertones to capture the life and potential of ivy tendrils that twine around a wall—as well as the brighter sunshine-y notes that lend it some extra color.

Ivy Green 2
Hex #1D711B 
RGB 29, 113, 27
CMYK 74, 0, 76, 56