#00A166

sRGB · 0 / 161 / 102

#00A166 belongs to the green-cyan family. Its hex code tells a screen to mix 0 red, 161 green and 102 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 158.0° lands in the green-cyan region. Its 100.0% saturation makes it strong in color at this lightness. HSL lightness is 31.6% 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 (6.29:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 0, 161, 102
HSL: 158.01°, 100.00%, 31.57%
HSV / HSB: 158.01°, 100.00%, 63.14%
CMYK (approx.): 100.00%, 0.00%, 36.65%, 36.86%
CIE XYZ (D65, Y = 100 for white): 15.142, 26.448, 16.878
CIELAB (D65, 2° observer): 58.460, -49.892, 20.951
WCAG relative luminance: 0.26449
24-bit decimal: 41318

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 #00A166 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 · 6.29:1

Normal text: AA
Large text: AAA

White text · 3.34:1

Normal text: Fail
Large text: AA

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

#A1003B sits half a turn (180°) from #00A166 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.

#00A166 #A1003B

Analogous

#00A116 and #008BA1 sit 30° to either side of #00A166. 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.

#00A116 #00A166 #008BA1

Triadic

#00A166, #6600A1 and #A16600 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#00A166 #6600A1 #A16600

Split complementary

Start at #00A166 and look across the wheel. #A1008B and #A11600 sit 30° to either side of its exact opposite, giving you two different accent choices.

#00A166 #A1008B #A11600

Square

Starting with #00A166, each quarter turn (90°) takes you to the next hue: #1600A1, #A1003B, then #8BA100. Across the square, #00A166 pairs with #A1003B, and #1600A1 with #8BA100.

#00A166 #1600A1 #A1003B #8BA100

Tetradic

#00A166 and #A1003B are opposites, as are #003BA1 and #A16600. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#00A166 #003BA1 #A1003B #A16600

Tints

Mixing #00A166 with white in 20% steps produces this scale. The first mixture, #33B485, keeps 80% of the original. By #CCECE0, the mixture is 80% white.

#00A166 #33B485 #66C7A3 #99D9C2 #CCECE0 #FFFFFF

Shades

Mixing #00A166 with black in 20% steps produces this scale. The first mixture, #008152, keeps 80% of the original. By #002014, the mixture is 80% black.

#00A166 #008152 #00613D #004029 #002014 #000000

Tones

Mixing #00A166 with middle gray in 20% steps produces this scale. The first mixture, #1A9A6B, keeps 80% of the original. By #66877B, the mixture is 80% middle gray.

#00A166 #1A9A6B #339470 #4D8D76 #66877B #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

#00A166

RGB

rgb(0 161 102)

HSL

hsl(158.012 100.000% 31.569%)

CSS example

.color-sample {
  background-color: #00A166;
  color: #000000;
}

Channel breakdown

RGB

#00A166 uses 0 red, 161 green and 102 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 0.0%

Green 63.1%

Blue 40.0%

CMYK

A simple CMYK estimate for #00A166 is 100.0% cyan, 0.0% magenta, 36.6% yellow and 36.9% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 100.0%

Magenta 0.0%

Yellow 36.6%

Black 36.9%

Nearby colors

The nearest shorthand match is #009966. Its matching digit pairs let you write it as #096 in CSS. For a modern design, keep #00A166 when you want an exact match. Use its web-safe neighbor, #009966, when matching a legacy palette of 216 colors.

Nearest shorthand · #009966 Nearest web-safe · #009966

Gradient to complement

#00A166 #1B865F #366B58 #515151 #6B3649 #861B42 #A1003B

Color vision previews

Compare how #00A166 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.

#9F9362

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.

#8F886A

Tritanopia

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

#00A092

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.

#829765

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.

#7A9169

Tritanomaly (50%)

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

#0C9F78

Grayscale (luminance)

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

#8D8D8D

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.

#66977B

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 0.35640 B 0.13287

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 0.27901 G 0.62179 B 0.41928

Linear Display P3

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

R 0.06327 G 0.34457 B 0.14678

CIE xyY

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

x 0.259 y 0.452 Y 26.448

CMY

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

C % 100.000 M % 36.863 Y % 60.000

Binary RGB

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

00000000 10100001 01100110