#00A539

sRGB · 0 / 165 / 57

#00A539 belongs to the green-cyan family. Its hex code tells a screen to mix 0 red, 165 green and 57 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 140.7° lands in the green-cyan region. Its 100.0% saturation makes it strong in color at this lightness. HSL lightness is 32.4% 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 (6.44:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 0, 165, 57
HSL: 140.73°, 100.00%, 32.35%
HSV / HSB: 140.73°, 100.00%, 64.71%
CMYK (approx.): 100.00%, 0.00%, 65.45%, 35.29%
CIE XYZ (D65, Y = 100 for white): 14.193, 27.204, 8.374
CIELAB (D65, 2° observer): 59.163, -58.711, 44.545
WCAG relative luminance: 0.27206
24-bit decimal: 42297

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 #00A539 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 · 6.44:1

Normal text: AA
Large text: AAA

White text · 3.26:1

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

#A5006C sits half a turn (180°) from #00A539 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.

#00A539 #A5006C

Analogous

#19A500 and #00A58C sit 30° to either side of #00A539. 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.

#19A500 #00A539 #00A58C

Triadic

#00A539, #3900A5 and #A53900 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#00A539 #3900A5 #A53900

Split complementary

Start at #00A539 and look across the wheel. #8C00A5 and #A50019 sit 30° to either side of its exact opposite, giving you two different accent choices.

#00A539 #8C00A5 #A50019

Square

Starting with #00A539, each quarter turn (90°) takes you to the next hue: #0019A5, #A5006C, then #A58C00. Across the square, #00A539 pairs with #A5006C, and #0019A5 with #A58C00.

#00A539 #0019A5 #A5006C #A58C00

Tetradic

#00A539 and #A5006C are opposites, as are #006CA5 and #A53900. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#00A539 #006CA5 #A5006C #A53900

Tints

Mixing #00A539 with white in 20% steps produces this scale. The first mixture, #33B761, keeps 80% of the original. By #CCEDD7, the mixture is 80% white.

#00A539 #33B761 #66C988 #99DBB0 #CCEDD7 #FFFFFF

Shades

Mixing #00A539 with black in 20% steps produces this scale. The first mixture, #00842E, keeps 80% of the original. By #00210B, the mixture is 80% black.

#00A539 #00842E #006322 #004217 #00210B #000000

Tones

Mixing #00A539 with middle gray in 20% steps produces this scale. The first mixture, #1A9E47, keeps 80% of the original. By #668772, the mixture is 80% middle gray.

#00A539 #1A9E47 #339655 #4D8F64 #668772 #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

#00A539

RGB

rgb(0 165 57)

HSL

hsl(140.727 100.000% 32.353%)

CSS example

.color-sample {
  background-color: #00A539;
  color: #000000;
}

Channel breakdown

RGB

#00A539 uses 0 red, 165 green and 57 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 0.0%

Green 64.7%

Blue 22.4%

CMYK

A simple CMYK estimate for #00A539 is 100.0% cyan, 0.0% magenta, 65.5% yellow and 35.3% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 100.0%

Magenta 0.0%

Yellow 65.5%

Black 35.3%

Nearby colors

The nearest shorthand match is #00AA33. Its matching digit pairs let you write it as #0A3 in CSS. For a modern design, keep #00A539 when you want an exact match. Use its web-safe neighbor, #009933, when matching a legacy palette of 216 colors.

Nearest shorthand · #00AA33 Nearest web-safe · #009933

Gradient to complement

#00A539 #1C8A42 #376E4A #535353 #6E375B #8A1C64 #A5006C

Color vision previews

Compare how #00A539 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.

#A7952C

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.

#988A43

Tritanopia

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

#00A18E

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.

#899A35

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.

#829440

Tritanomaly (50%)

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

#17A263

Grayscale (luminance)

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

#8E8E8E

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.

#679A6E

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 0.37626 B 0.04092

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 0.28665 G 0.63725 B 0.28168

Linear Display P3

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

R 0.06680 G 0.36377 B 0.06449

CIE xyY

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

x 0.285 y 0.547 Y 27.204

CMY

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

C % 100.000 M % 35.294 Y % 77.647

Binary RGB

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

00000000 10100101 00111001