#87EA21

sRGB · 135 / 234 / 33

#87EA21 belongs to the yellow-green family. Its hex code tells a screen to mix 135 red, 234 green and 33 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 89.6° lands in the yellow-green region. Its 82.7% saturation makes it strong in color at this lightness. HSL lightness is 52.4% 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 (13.82:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 135, 234, 33
HSL: 89.55°, 82.72%, 52.35%
HSV / HSB: 89.55°, 85.90%, 91.76%
CMYK (approx.): 42.31%, 0.00%, 85.90%, 8.24%
CIE XYZ (D65, Y = 100 for white): 39.687, 64.105, 11.721
CIELAB (D65, 2° observer): 84.020, -57.404, 77.315
WCAG relative luminance: 0.64106
24-bit decimal: 8907297

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 #87EA21 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 · 13.82:1

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. 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

#8421EA sits half a turn (180°) from #87EA21 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.

#87EA21 #8421EA

Analogous

#EAE921 and #22EA21 sit 30° to either side of #87EA21. 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.

#EAE921 #87EA21 #22EA21

Triadic

#87EA21, #2187EA and #EA2187 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#87EA21 #2187EA #EA2187

Split complementary

Start at #87EA21 and look across the wheel. #2123EA and #E821EA sit 30° to either side of its exact opposite, giving you two different accent choices.

#87EA21 #2123EA #E821EA

Square

Starting with #87EA21, each quarter turn (90°) takes you to the next hue: #21EAE8, #8421EA, then #EA2123. Across the square, #87EA21 pairs with #8421EA, and #21EAE8 with #EA2123.

#87EA21 #21EAE8 #8421EA #EA2123

Tetradic

#87EA21 and #8421EA are opposites, as are #21EA84 and #EA2187. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#87EA21 #21EA84 #8421EA #EA2187

Tints

Mixing #87EA21 with white in 20% steps produces this scale. The first mixture, #9FEE4D, keeps 80% of the original. By #E7FBD3, the mixture is 80% white.

#87EA21 #9FEE4D #B7F27A #CFF7A6 #E7FBD3 #FFFFFF

Shades

Mixing #87EA21 with black in 20% steps produces this scale. The first mixture, #6CBB1A, keeps 80% of the original. By #1B2F07, the mixture is 80% black.

#87EA21 #6CBB1A #518C14 #365E0D #1B2F07 #000000

Tones

Mixing #87EA21 with middle gray in 20% steps produces this scale. The first mixture, #86D534, keeps 80% of the original. By #81956D, the mixture is 80% middle gray.

#87EA21 #86D534 #84C047 #83AA5A #81956D #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

#87EA21

RGB

rgb(135 234 33)

HSL

hsl(89.552 82.716% 52.353%)

CSS example

.color-sample {
  background-color: #87EA21;
  color: #000000;
}

Channel breakdown

RGB

#87EA21 uses 135 red, 234 green and 33 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 52.9%

Green 91.8%

Blue 12.9%

CMYK

A simple CMYK estimate for #87EA21 is 42.3% cyan, 0.0% magenta, 85.9% yellow and 8.2% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 42.3%

Magenta 0.0%

Yellow 85.9%

Black 8.2%

Nearby colors

The nearest shorthand match is #88EE22. Its matching digit pairs let you write it as #8E2 in CSS. For a modern design, keep #87EA21 when you want an exact match. Use its web-safe neighbor, #99FF33, when matching a legacy palette of 216 colors.

Nearest shorthand · #88EE22 Nearest web-safe · #99FF33

Gradient to complement

#87EA21 #87C943 #86A764 #868686 #8564A7 #8543C9 #8421EA

Color vision previews

Compare how #87EA21 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.

#F3D700

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.

#E6CF3D

Tritanopia

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

#86E0C8

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.

#D5DD00

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.

#D0D834

Tritanomaly (50%)

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

#8DE680

Grayscale (luminance)

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

#D2D2D2

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.

#B1DE9B

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 0.24228 G 0.82279 B 0.01521

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 0.62242 G 0.90809 B 0.30857

Linear Display P3

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

R 0.34534 G 0.80352 B 0.07755

CIE xyY

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

x 0.344 y 0.555 Y 64.105

CMY

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

C % 47.059 M % 8.235 Y % 87.059

Binary RGB

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

10000111 11101010 00100001