#00DECD

sRGB: 0 / 222 / 205

#00DECD belongs to the cyan family. Its hex code tells a screen to mix 0 red, 222 green and 205 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 175.4° lands in the cyan region. Its 100.0% saturation makes it strong in color at this lightness. HSL lightness is 43.5% on a scale from black (0%) to white (100%). Of black and white lettering, black has the clearer light-to-dark separation on this background (12.33:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 0, 222, 205
HSL: 175.41°, 100.00%, 43.53%
HSV / HSB: 175.41°, 100.00%, 87.06%
CMYK (approx.): 100.00%, 0.00%, 7.66%, 12.94%
CIE XYZ (D65, Y = 100 for white): 37.138, 56.648, 66.736
CIELAB (D65, 2° observer): 79.981, -48.172, -4.392
WCAG relative luminance: 0.56650
24-bit decimal: 57037

CMYK uses a profile-free approximation. Printed output depends on the press, ink and paper. Lab uses a D65 white point.

Text contrast

Contrast tells you how clearly lettering separates from #00DECD in light and dark. The ratio compares relative luminance, a measure of light weighted for human vision. Identical colors give 1:1 and black against white gives 21:1. A ratio of 2.99:1 falls just below the 3:1 AA minimum for large text. Body text needs at least 4.5:1 because its finer strokes are harder to distinguish.

Black text: 12.33:1

Normal text: AAA
Large text: AAA

White text: 1.70:1

Normal text: Fail
Large text: Fail

AA and AAA are WCAG accessibility levels. AAA sets a higher bar: 7:1 for normal text and 4.5:1 for large text. Large text begins at 18 pt regular or 14 pt bold. Ratings use the unrounded ratio.

Reference: WCAG text contrast guidance

Palettes & scales

Harmonies rotate the hue. Scales mix the starting color with white, black or middle gray in 20% steps in encoded sRGB.

Complementary

#DE0011 sits half a turn (180°) from #00DECD on the HSL wheel. Keeping saturation and lightness steady while crossing to the opposite hue gives you a contrasting accent. Check text contrast separately before using the pair for lettering.

#00DECD #DE0011

Analogous

#00DE5E and #0080DE sit 30° to either side of #00DECD. The three hues are neighbors on the wheel, so you can change the color of a border or highlight while keeping it close to the original.

#00DE5E #00DECD #0080DE

Triadic

#00DECD, #CD00DE and #DECD00 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#00DECD #CD00DE #DECD00

Split complementary

Start at #00DECD and look across the wheel. #DE0080 and #DE5E00 sit 30° to either side of its exact opposite, giving you two different accent choices.

#00DECD #DE0080 #DE5E00

Square

Starting with #00DECD, each quarter turn (90°) takes you to the next hue: #5E00DE, #DE0011, then #80DE00. Across the square, #00DECD pairs with #DE0011, and #5E00DE with #80DE00.

#00DECD #5E00DE #DE0011 #80DE00

Tetradic

#00DECD and #DE0011 are opposites, as are #0011DE and #DECD00. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#00DECD #0011DE #DE0011 #DECD00

Tints

Mixing #00DECD with white in 20% steps produces this scale. The first mixture, #33E5D7, keeps 80% of the original. By #CCF8F5, the mixture is 80% white.

#00DECD #33E5D7 #66EBE1 #99F2EB #CCF8F5 #FFFFFF

Shades

Mixing #00DECD with black in 20% steps produces this scale. The first mixture, #00B2A4, keeps 80% of the original. By #002C29, the mixture is 80% black.

#00DECD #00B2A4 #00857B #005952 #002C29 #000000

Tones

Mixing #00DECD with middle gray in 20% steps produces this scale. The first mixture, #1ACBBE, keeps 80% of the original. By #66938F, the mixture is 80% middle gray.

#00DECD #1ACBBE #33B8AE #4DA69F #66938F #808080

Copy color codes

Hex, RGB and HSL are three ways to write this screen color. Paste any of them into a CSS color property.

Hex

#00DECD

RGB

rgb(0 222 205)

HSL

hsl(175.405 100.000% 43.529%)

CSS example

.color-sample {
  background-color: #00DECD;
  color: #000000;
}

Channel breakdown

RGB

#00DECD uses 0 red, 222 green and 205 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 0.0%

Green 87.1%

Blue 80.4%

CMYK

A simple CMYK estimate for #00DECD is 100.0% cyan, 0.0% magenta, 7.7% yellow and 12.9% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 100.0%

Magenta 0.0%

Yellow 7.7%

Black 12.9%

Nearby colors

The nearest shorthand match is #00DDCC. Its matching digit pairs let you write it as #0DC in CSS. For a modern design, keep #00DECD when you want an exact match. Use its web-safe neighbor, #00CCCC, when matching a legacy palette of 216 colors.

Nearest shorthand: #00DDCC Nearest web-safe: #00CCCC

Gradient to complement

#00DECD #25B9AE #4A948E #6F6F6F #944A50 #B92530 #DE0011

Color vision previews

Compare how #00DECD appears in each simulation. When two chart lines or status indicators become hard to tell apart, a label, shape or line pattern gives readers another way to distinguish them. Individual perception varies.

Protanopia

A red–green color vision deficiency. Without a distinct response from long-wavelength cones, some reds and greens can look alike, and reds can appear darker.

#D2D1CC

Deuteranopia

A red–green color vision deficiency. Without a distinct response from medium-wavelength cones, some greens can be difficult to distinguish from reds or browns.

#BABFCF

Tritanopia

A blue–yellow color vision deficiency. Without a distinct response from short-wavelength cones, blue can resemble green, and yellow can resemble pink.

#00E3D9

Protanomaly (50%)

An altered long-wavelength cone response can make reds appear dimmer and harder to distinguish from greens. This swatch shows the model’s halfway setting.

#ACD4CD

Deuteranomaly (50%)

An altered medium-wavelength cone response can reduce the visible difference between reds and greens. This swatch shows the model’s halfway setting.

#A0CACE

Tritanomaly (50%)

An altered short-wavelength cone response can make blue harder to distinguish from green. This swatch shows the model’s halfway setting.

#00DED1

Grayscale (luminance)

This design check removes hue and preserves relative luminance so you can compare light and dark areas.

#C6C6C6

Partial grayscale (50% blend)

This design check mixes the original color halfway toward its grayscale equivalent in linear light. Use it to see how a design holds up as color fades.

#91D3CA

Reference: National Eye Institute: Types of Color Vision Deficiency

Technical reference

CAM16 and CIECAM02 below assume D65 white, an average surround, background Y of 20 against white at 100, and adapting luminance of 4.07 cd/m².

Linear sRGB

These channels scale with emitted light. Use them for lighting calculations and physically meaningful blends.

R 0.00000 G 0.73046 B 0.61050

Display P3

P3 displays can reproduce a wider range of reds and greens. These coordinates reproduce this same sRGB swatch on a color-managed P3 display.

R 0.39543 G 0.85766 B 0.80290

Linear Display P3

These P3 channels are proportional to light, before display encoding.

R 0.12968 G 0.70621 B 0.60875

CIE xyY

The x and y coordinates locate chromaticity on a diagram. Y gives relative luminance on a scale where white is 100.

x 0.231 y 0.353 Y 56.648

CMY

Ideal cyan, magenta and yellow are the complements of the encoded red, green and blue channels.

C % 100.000 M % 12.941 Y % 19.608

Binary RGB

Each eight-bit group represents one channel. Together they store the 24-bit hex color.

00000000 11011110 11001101