#28FA4E

sRGB · 40 / 250 / 78

#28FA4E belongs to the green family. Its hex code tells a screen to mix 40 red, 250 green and 78 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 130.9° lands in the green region. Its 95.5% saturation makes it strong in color at this lightness. HSL lightness is 56.9% 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 (14.87:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 40, 250, 78
HSL: 130.86°, 95.45%, 56.86%
HSV / HSB: 130.86°, 84.00%, 98.04%
CMYK (approx.): 84.00%, 0.00%, 68.80%, 1.96%
CIE XYZ (D65, Y = 100 for white): 36.434, 69.369, 18.677
CIELAB (D65, 2° observer): 86.687, -79.401, 65.928
WCAG relative luminance: 0.69372
24-bit decimal: 2685518

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 #28FA4E 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 · 14.87:1

Normal text: AAA
Large text: AAA

White text · 1.41:1

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

#FA28D4 sits half a turn (180°) from #28FA4E 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.

#28FA4E #FA28D4

Analogous

#6BFA28 and #28FAB7 sit 30° to either side of #28FA4E. 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.

#6BFA28 #28FA4E #28FAB7

Triadic

#28FA4E, #4E28FA and #FA4E28 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#28FA4E #4E28FA #FA4E28

Split complementary

Start at #28FA4E and look across the wheel. #B728FA and #FA286B sit 30° to either side of its exact opposite, giving you two different accent choices.

#28FA4E #B728FA #FA286B

Square

Starting with #28FA4E, each quarter turn (90°) takes you to the next hue: #286BFA, #FA28D4, then #FAB728. Across the square, #28FA4E pairs with #FA28D4, and #286BFA with #FAB728.

#28FA4E #286BFA #FA28D4 #FAB728

Tetradic

#28FA4E and #FA28D4 are opposites, as are #28D4FA and #FA4E28. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#28FA4E #28D4FA #FA28D4 #FA4E28

Tints

Mixing #28FA4E with white in 20% steps produces this scale. The first mixture, #53FB71, keeps 80% of the original. By #D4FEDC, the mixture is 80% white.

#28FA4E #53FB71 #7EFC95 #A9FDB8 #D4FEDC #FFFFFF

Shades

Mixing #28FA4E with black in 20% steps produces this scale. The first mixture, #20C83E, keeps 80% of the original. By #083210, the mixture is 80% black.

#28FA4E #20C83E #18962F #10641F #083210 #000000

Tones

Mixing #28FA4E with middle gray in 20% steps produces this scale. The first mixture, #3AE258, keeps 80% of the original. By #6E9876, the mixture is 80% middle gray.

#28FA4E #3AE258 #4BC962 #5DB16C #6E9876 #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

#28FA4E

RGB

rgb(40 250 78)

HSL

hsl(130.857 95.455% 56.863%)

CSS example

.color-sample {
  background-color: #28FA4E;
  color: #000000;
}

Channel breakdown

RGB

#28FA4E uses 40 red, 250 green and 78 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 15.7%

Green 98.0%

Blue 30.6%

CMYK

A simple CMYK estimate for #28FA4E is 84.0% cyan, 0.0% magenta, 68.8% yellow and 2.0% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 84.0%

Magenta 0.0%

Yellow 68.8%

Black 2.0%

Nearby colors

The nearest shorthand match is #22FF55. Its matching digit pairs let you write it as #2F5 in CSS. For a modern design, keep #28FA4E when you want an exact match. Use its web-safe neighbor, #33FF66, when matching a legacy palette of 216 colors.

Nearest shorthand · #22FF55 Nearest web-safe · #33FF66

Gradient to complement

#28FA4E #4BD764 #6EB47B #919191 #B46EA7 #D74BBE #FA28D4

Color vision previews

Compare how #28FA4E 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.

#FEE234

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.

#E9D35F

Tritanopia

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

#00F3D8

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.

#D3E946

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.

#C8E159

Tritanomaly (50%)

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

#3BF694

Grayscale (luminance)

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

#D9D9D9

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.

#A1EAA7

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 0.02122 G 0.95597 B 0.07619

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 0.46983 G 0.96625 B 0.40855

Linear Display P3

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

R 0.18717 G 0.92494 B 0.13894

CIE xyY

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

x 0.293 y 0.557 Y 69.369

CMY

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

C % 84.314 M % 1.961 Y % 69.412

Binary RGB

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

00101000 11111010 01001110