#CDEEFF

sRGB: 205 / 238 / 255

#CDEEFF belongs to the azure family. Its hex code tells a screen to mix 205 red, 238 green and 255 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 200.4° lands in the azure region. Its 100.0% saturation makes it strong in color at this lightness. HSL lightness is 90.2% 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 (17.27:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 205, 238, 255
HSL: 200.40°, 100.00%, 90.20%
HSV / HSB: 200.40°, 19.61%, 100.00%
CMYK (approx.): 19.61%, 6.67%, 0.00%, 0.00%
CIE XYZ (D65, Y = 100 for white): 73.798, 81.347, 106.424
CIELAB (D65, 2° observer): 92.286, -7.192, -11.769
WCAG relative luminance: 0.81348
24-bit decimal: 13496063

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 #CDEEFF 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: 17.27:1

Normal text: AAA
Large text: AAA

White text: 1.22:1

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

#FFDECD sits half a turn (180°) from #CDEEFF 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.

#CDEEFF #FFDECD

Analogous

#CDFFF7 and #CDD5FF sit 30° to either side of #CDEEFF. 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.

#CDFFF7 #CDEEFF #CDD5FF

Triadic

#CDEEFF, #FFCDEE and #EEFFCD are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#CDEEFF #FFCDEE #EEFFCD

Split complementary

Start at #CDEEFF and look across the wheel. #FFCDD5 and #FFF7CD sit 30° to either side of its exact opposite, giving you two different accent choices.

#CDEEFF #FFCDD5 #FFF7CD

Square

Starting with #CDEEFF, each quarter turn (90°) takes you to the next hue: #F7CDFF, #FFDECD, then #D5FFCD. Across the square, #CDEEFF pairs with #FFDECD, and #F7CDFF with #D5FFCD.

#CDEEFF #F7CDFF #FFDECD #D5FFCD

Tetradic

#CDEEFF and #FFDECD are opposites, as are #DECDFF and #EEFFCD. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#CDEEFF #DECDFF #FFDECD #EEFFCD

Tints

Mixing #CDEEFF with white in 20% steps produces this scale. The first mixture, #D7F1FF, keeps 80% of the original. By #F5FCFF, the mixture is 80% white.

#CDEEFF #D7F1FF #E1F5FF #EBF8FF #F5FCFF #FFFFFF

Shades

Mixing #CDEEFF with black in 20% steps produces this scale. The first mixture, #A4BECC, keeps 80% of the original. By #293033, the mixture is 80% black.

#CDEEFF #A4BECC #7B8F99 #525F66 #293033 #000000

Tones

Mixing #CDEEFF with middle gray in 20% steps produces this scale. The first mixture, #BED8E6, keeps 80% of the original. By #8F9699, the mixture is 80% middle gray.

#CDEEFF #BED8E6 #AEC2CC #9FACB3 #8F9699 #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

#CDEEFF

RGB

rgb(205 238 255)

HSL

hsl(200.400 100.000% 90.196%)

CSS example

.color-sample {
  background-color: #CDEEFF;
  color: #000000;
}

Channel breakdown

RGB

#CDEEFF uses 205 red, 238 green and 255 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 80.4%

Green 93.3%

Blue 100.0%

CMYK

A simple CMYK estimate for #CDEEFF is 19.6% cyan, 6.7% magenta, 0.0% yellow and 0.0% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 19.6%

Magenta 6.7%

Yellow 0.0%

Black 0.0%

Nearby colors

The nearest shorthand match is #CCEEFF. Its matching digit pairs let you write it as #CEF in CSS. For a modern design, keep #CDEEFF when you want an exact match. Use its web-safe neighbor, #CCFFFF, when matching a legacy palette of 216 colors.

Nearest shorthand: #CCEEFF Nearest web-safe: #CCFFFF

Gradient to complement

#CDEEFF #D5EBF7 #DEE9EE #E6E6E6 #EEE3DE #F7E1D5 #FFDECD

Color vision previews

Compare how #CDEEFF 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.

#E6ECFF

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.

#DEE6FF

Tritanopia

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

#BFF3F3

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.

#DDECFF

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.

#DAE9FF

Tritanomaly (50%)

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

#CBEFFB

Grayscale (luminance)

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

#E9E9E9

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.

#DBEBF4

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 0.61050 G 0.85499 B 1.00000

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 0.82886 G 0.92941 B 0.99242

Linear Display P3

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

R 0.65390 G 0.84688 B 0.98285

CIE xyY

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

x 0.282 y 0.311 Y 81.347

CMY

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

C % 19.608 M % 6.667 Y % 0.000

Binary RGB

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

11001101 11101110 11111111