#39EC00

sRGB: 57 / 236 / 0

#39EC00 belongs to the green family. Its hex code tells a screen to mix 57 red, 236 green and 0 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 105.5° lands in the green 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 (13.17:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 57, 236, 0
HSL: 105.51°, 100.00%, 46.27%
HSV / HSB: 105.51°, 100.00%, 92.55%
CMYK (approx.): 75.85%, 0.00%, 100.00%, 7.45%
CIE XYZ (D65, Y = 100 for white): 31.681, 60.858, 10.077
CIELAB (D65, 2° observer): 82.303, -77.039, 79.027
WCAG relative luminance: 0.60861
24-bit decimal: 3795968

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 #39EC00 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: 13.17:1

Normal text: AAA
Large text: AAA

White text: 1.59:1

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

#B300EC sits half a turn (180°) from #39EC00 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.

#39EC00 #B300EC

Analogous

#AFEC00 and #00EC3D sit 30° to either side of #39EC00. 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.

#AFEC00 #39EC00 #00EC3D

Triadic

#39EC00, #0039EC and #EC0039 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#39EC00 #0039EC #EC0039

Split complementary

Start at #39EC00 and look across the wheel. #3D00EC and #EC00AF sit 30° to either side of its exact opposite, giving you two different accent choices.

#39EC00 #3D00EC #EC00AF

Square

Starting with #39EC00, each quarter turn (90°) takes you to the next hue: #00AFEC, #B300EC, then #EC3D00. Across the square, #39EC00 pairs with #B300EC, and #00AFEC with #EC3D00.

#39EC00 #00AFEC #B300EC #EC3D00

Tetradic

#39EC00 and #B300EC are opposites, as are #00ECB3 and #EC0039. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#39EC00 #00ECB3 #B300EC #EC0039

Tints

Mixing #39EC00 with white in 20% steps produces this scale. The first mixture, #61F033, keeps 80% of the original. By #D7FBCC, the mixture is 80% white.

#39EC00 #61F033 #88F466 #B0F799 #D7FBCC #FFFFFF

Shades

Mixing #39EC00 with black in 20% steps produces this scale. The first mixture, #2EBD00, keeps 80% of the original. By #0B2F00, the mixture is 80% black.

#39EC00 #2EBD00 #228E00 #175E00 #0B2F00 #000000

Tones

Mixing #39EC00 with middle gray in 20% steps produces this scale. The first mixture, #47D61A, keeps 80% of the original. By #729666, the mixture is 80% middle gray.

#39EC00 #47D61A #55C133 #64AB4D #729666 #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

#39EC00

RGB

rgb(57 236 0)

HSL

hsl(105.508 100.000% 46.275%)

CSS example

.color-sample {
  background-color: #39EC00;
  color: #000000;
}

Channel breakdown

RGB

#39EC00 uses 57 red, 236 green and 0 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 22.4%

Green 92.5%

Blue 0.0%

CMYK

A simple CMYK estimate for #39EC00 is 75.8% cyan, 0.0% magenta, 100.0% yellow and 7.5% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 75.8%

Magenta 0.0%

Yellow 100.0%

Black 7.5%

Nearby colors

The nearest shorthand match is #33EE00. Its matching digit pairs let you write it as #3E0 in CSS. For a modern design, keep #39EC00 when you want an exact match. Use its web-safe neighbor, #33FF00, when matching a legacy palette of 216 colors.

Nearest shorthand: #33EE00 Nearest web-safe: #33FF00

Gradient to complement

#39EC00 #4DC527 #629D4F #767676 #8A4F9D #9F27C5 #B300EC

Color vision previews

Compare how #39EC00 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.

#F2D500

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.

#DFC835

Tritanopia

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

#00E4C8

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.

#CADC00

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.

#C1D529

Tritanomaly (50%)

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

#48E87E

Grayscale (luminance)

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

#CDCDCD

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.

#9ADD96

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 0.04092 G 0.83880 B 0.00000

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 0.46442 G 0.91247 B 0.27491

Linear Display P3

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

R 0.18257 G 0.81231 B 0.06143

CIE xyY

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

x 0.309 y 0.593 Y 60.858

CMY

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

C % 77.647 M % 7.451 Y % 100.000

Binary RGB

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

00111001 11101100 00000000