#00A4EC

sRGB · 0 / 164 / 236

#00A4EC belongs to the azure family. Its hex code tells a screen to mix 0 red, 164 green and 236 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 198.3° lands in the azure region. Its 100.0% saturation makes it strong in color at this lightness. HSL lightness is 46.3% 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 (7.52:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 0, 164, 236
HSL: 198.31°, 100.00%, 46.27%
HSV / HSB: 198.31°, 100.00%, 92.55%
CMYK (approx.): 100.00%, 30.51%, 0.00%, 7.45%
CIE XYZ (D65, Y = 100 for white): 28.414, 32.605, 84.156
CIELAB (D65, 2° observer): 63.840, -9.814, -45.875
WCAG relative luminance: 0.32607
24-bit decimal: 42220

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 #00A4EC 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 · 7.52:1

Normal text: AAA
Large text: AAA

White text · 2.79:1

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

#EC4800 sits half a turn (180°) from #00A4EC 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.

#00A4EC #EC4800

Analogous

#00ECBE and #002EEC sit 30° to either side of #00A4EC. 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.

#00ECBE #00A4EC #002EEC

Triadic

#00A4EC, #EC00A4 and #A4EC00 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#00A4EC #EC00A4 #A4EC00

Split complementary

Start at #00A4EC and look across the wheel. #EC002E and #ECBE00 sit 30° to either side of its exact opposite, giving you two different accent choices.

#00A4EC #EC002E #ECBE00

Square

Starting with #00A4EC, each quarter turn (90°) takes you to the next hue: #BE00EC, #EC4800, then #2EEC00. Across the square, #00A4EC pairs with #EC4800, and #BE00EC with #2EEC00.

#00A4EC #BE00EC #EC4800 #2EEC00

Tetradic

#00A4EC and #EC4800 are opposites, as are #4800EC and #A4EC00. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#00A4EC #4800EC #EC4800 #A4EC00

Tints

Mixing #00A4EC with white in 20% steps produces this scale. The first mixture, #33B6F0, keeps 80% of the original. By #CCEDFB, the mixture is 80% white.

#00A4EC #33B6F0 #66C8F4 #99DBF7 #CCEDFB #FFFFFF

Shades

Mixing #00A4EC with black in 20% steps produces this scale. The first mixture, #0083BD, keeps 80% of the original. By #00212F, the mixture is 80% black.

#00A4EC #0083BD #00628E #00425E #00212F #000000

Tones

Mixing #00A4EC with middle gray in 20% steps produces this scale. The first mixture, #1A9DD6, keeps 80% of the original. By #668796, the mixture is 80% middle gray.

#00A4EC #1A9DD6 #3396C1 #4D8EAB #668796 #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

#00A4EC

RGB

rgb(0 164 236)

HSL

hsl(198.305 100.000% 46.275%)

CSS example

.color-sample {
  background-color: #00A4EC;
  color: #000000;
}

Channel breakdown

RGB

#00A4EC uses 0 red, 164 green and 236 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 0.0%

Green 64.3%

Blue 92.5%

CMYK

A simple CMYK estimate for #00A4EC is 100.0% cyan, 30.5% magenta, 0.0% yellow and 7.5% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 100.0%

Magenta 30.5%

Yellow 0.0%

Black 7.5%

Nearby colors

The nearest shorthand match is #00AAEE. Its matching digit pairs let you write it as #0AE in CSS. For a modern design, keep #00A4EC when you want an exact match. Use its web-safe neighbor, #0099FF, when matching a legacy palette of 216 colors.

Nearest shorthand · #00AAEE Nearest web-safe · #0099FF

Gradient to complement

#00A4EC #2795C5 #4F859D #767676 #9D674F #C55727 #EC4800

Color vision previews

Compare how #00A4EC 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.

#81A5EF

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.

#6492EB

Tritanopia

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

#00B6BD

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.

#67A3EE

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.

#579AEC

Tritanomaly (50%)

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

#00A9DC

Grayscale (luminance)

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

#9B9B9B

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.

#709FC9

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 0.37124 B 0.83880

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 0.28474 G 0.63339 B 0.90162

Linear Display P3

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

R 0.06591 G 0.35891 B 0.79062

CIE xyY

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

x 0.196 y 0.225 Y 32.605

CMY

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

C % 100.000 M % 35.686 Y % 7.451

Binary RGB

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

00000000 10100100 11101100