#4FF00A

sRGB: 79 / 240 / 10

#4FF00A belongs to the yellow-green family. Its hex code tells a screen to mix 79 red, 240 green and 10 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 102.0° lands in the yellow-green region. Its 92.0% saturation makes it strong in color at this lightness. HSL lightness is 49.0% 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 (13.80:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 79, 240, 10
HSL: 102.00°, 92.00%, 49.02%
HSV / HSB: 102.00°, 95.83%, 94.12%
CMYK (approx.): 67.08%, 0.00%, 95.83%, 5.88%
CIE XYZ (D65, Y = 100 for white): 34.438, 64.002, 10.826
CIELAB (D65, 2° observer): 83.967, -74.436, 79.709
WCAG relative luminance: 0.64004
24-bit decimal: 5238794

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 #4FF00A 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: 13.80:1

Normal text: AAA
Large text: AAA

White text: 1.52:1

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

#AB0AF0 sits half a turn (180°) from #4FF00A 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.

#4FF00A #AB0AF0

Analogous

#C2F00A and #0AF038 sit 30° to either side of #4FF00A. 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.

#C2F00A #4FF00A #0AF038

Triadic

#4FF00A, #0A4FF0 and #F00A4F are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#4FF00A #0A4FF0 #F00A4F

Split complementary

Start at #4FF00A and look across the wheel. #380AF0 and #F00AC2 sit 30° to either side of its exact opposite, giving you two different accent choices.

#4FF00A #380AF0 #F00AC2

Square

Starting with #4FF00A, each quarter turn (90°) takes you to the next hue: #0AC2F0, #AB0AF0, then #F0380A. Across the square, #4FF00A pairs with #AB0AF0, and #0AC2F0 with #F0380A.

#4FF00A #0AC2F0 #AB0AF0 #F0380A

Tetradic

#4FF00A and #AB0AF0 are opposites, as are #0AF0AB and #F00A4F. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#4FF00A #0AF0AB #AB0AF0 #F00A4F

Tints

Mixing #4FF00A with white in 20% steps produces this scale. The first mixture, #72F33B, keeps 80% of the original. By #DCFCCE, the mixture is 80% white.

#4FF00A #72F33B #95F66C #B9F99D #DCFCCE #FFFFFF

Shades

Mixing #4FF00A with black in 20% steps produces this scale. The first mixture, #3FC008, keeps 80% of the original. By #103002, the mixture is 80% black.

#4FF00A #3FC008 #2F9006 #206004 #103002 #000000

Tones

Mixing #4FF00A with middle gray in 20% steps produces this scale. The first mixture, #59DA22, keeps 80% of the original. By #769668, the mixture is 80% middle gray.

#4FF00A #59DA22 #63C339 #6CAD51 #769668 #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

#4FF00A

RGB

rgb(79 240 10)

HSL

hsl(102.000 92.000% 49.020%)

CSS example

.color-sample {
  background-color: #4FF00A;
  color: #000000;
}

Channel breakdown

RGB

#4FF00A uses 79 red, 240 green and 10 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 31.0%

Green 94.1%

Blue 3.9%

CMYK

A simple CMYK estimate for #4FF00A is 67.1% cyan, 0.0% magenta, 95.8% yellow and 5.9% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 67.1%

Magenta 0.0%

Yellow 95.8%

Black 5.9%

Nearby colors

The nearest shorthand match is #55EE11. Its matching digit pairs let you write it as #5E1 in CSS. For a modern design, keep #4FF00A when you want an exact match. Use its web-safe neighbor, #66FF00, when matching a legacy palette of 216 colors.

Nearest shorthand: #55EE11 Nearest web-safe: #66FF00

Gradient to complement

#4FF00A #5ECA30 #6EA357 #7D7D7D #8C57A3 #9C30CA #AB0AF0

Color vision previews

Compare how #4FF00A 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.

#F7D900

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.

#E4CD38

Tritanopia

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

#31E8CC

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.

#D0E000

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.

#C7D92D

Tritanomaly (50%)

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

#5AEC81

Grayscale (luminance)

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

#D1D1D1

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.

#A2E19A

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 0.07819 G 0.87137 B 0.00304

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 0.50533 G 0.92852 B 0.28746

Linear Display P3

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

R 0.21901 G 0.84504 B 0.06718

CIE xyY

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

x 0.315 y 0.586 Y 64.002

CMY

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

C % 69.020 M % 5.882 Y % 96.078

Binary RGB

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

01001111 11110000 00001010