#00AECB

sRGB · 0 / 174 / 203

#00AECB belongs to the cyan family. Its hex code tells a screen to mix 0 red, 174 green and 203 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 188.6° lands in the cyan region. Its 100.0% saturation makes it strong in color at this lightness. HSL lightness is 39.8% 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 (7.92:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 0, 174, 203
HSL: 188.57°, 100.00%, 39.80%
HSV / HSB: 188.57°, 100.00%, 79.61%
CMYK (approx.): 100.00%, 14.29%, 0.00%, 20.39%
CIE XYZ (D65, Y = 100 for white): 25.914, 34.582, 61.811
CIELAB (D65, 2° observer): 65.422, -26.740, -25.208
WCAG relative luminance: 0.34584
24-bit decimal: 44747

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 #00AECB 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 · 7.92:1

Normal text: AAA
Large text: AAA

White text · 2.65:1

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. 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

#CB1D00 sits half a turn (180°) from #00AECB 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.

#00AECB #CB1D00

Analogous

#00CB83 and #0049CB sit 30° to either side of #00AECB. 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.

#00CB83 #00AECB #0049CB

Triadic

#00AECB, #CB00AE and #AECB00 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#00AECB #CB00AE #AECB00

Split complementary

Start at #00AECB and look across the wheel. #CB0049 and #CB8200 sit 30° to either side of its exact opposite, giving you two different accent choices.

#00AECB #CB0049 #CB8200

Square

Starting with #00AECB, each quarter turn (90°) takes you to the next hue: #8200CB, #CB1D00, then #49CB00. Across the square, #00AECB pairs with #CB1D00, and #8200CB with #49CB00.

#00AECB #8200CB #CB1D00 #49CB00

Tetradic

#00AECB and #CB1D00 are opposites, as are #1D00CB and #AECB00. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#00AECB #1D00CB #CB1D00 #AECB00

Tints

Mixing #00AECB with white in 20% steps produces this scale. The first mixture, #33BED5, keeps 80% of the original. By #CCEFF5, the mixture is 80% white.

#00AECB #33BED5 #66CEE0 #99DFEA #CCEFF5 #FFFFFF

Shades

Mixing #00AECB with black in 20% steps produces this scale. The first mixture, #008BA2, keeps 80% of the original. By #002329, the mixture is 80% black.

#00AECB #008BA2 #00687A #004651 #002329 #000000

Tones

Mixing #00AECB with middle gray in 20% steps produces this scale. The first mixture, #1AA5BC, keeps 80% of the original. By #66898F, the mixture is 80% middle gray.

#00AECB #1AA5BC #339CAD #4D929E #66898F #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

#00AECB

RGB

rgb(0 174 203)

HSL

hsl(188.571 100.000% 39.804%)

CSS example

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

Channel breakdown

RGB

#00AECB uses 0 red, 174 green and 203 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 0.0%

Green 68.2%

Blue 79.6%

CMYK

A simple CMYK estimate for #00AECB is 100.0% cyan, 14.3% magenta, 0.0% yellow and 20.4% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 100.0%

Magenta 14.3%

Yellow 0.0%

Black 20.4%

Nearby colors

The nearest shorthand match is #00AACC. Its matching digit pairs let you write it as #0AC in CSS. For a modern design, keep #00AECB when you want an exact match. Use its web-safe neighbor, #0099CC, when matching a legacy palette of 216 colors.

Nearest shorthand · #00AACC Nearest web-safe · #0099CC

Gradient to complement

#00AECB #2296A9 #447E87 #666666 #874D44 #A93522 #CB1D00

Color vision previews

Compare how #00AECB 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.

#9AA8CD

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.

#8398CB

Tritanopia

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

#00B8B7

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.

#7DA9CC

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.

#71A0CB

Tritanomaly (50%)

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

#00B0C4

Grayscale (luminance)

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

#9F9F9F

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.

#73A7B7

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 0.42327 B 0.59720

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 0.30382 G 0.67205 B 0.78239

Linear Display P3

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

R 0.07515 G 0.40922 B 0.57441

CIE xyY

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

x 0.212 y 0.283 Y 34.582

CMY

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

C % 100.000 M % 31.765 Y % 20.392

Binary RGB

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

00000000 10101110 11001011