#34DD21

sRGB: 52 / 221 / 33

#34DD21 belongs to the green family. Its hex code tells a screen to mix 52 red, 221 green and 33 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 113.9° lands in the green region. Its 74.0% saturation makes it strong in color at this lightness. HSL lightness is 49.8% 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 (11.51:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 52, 221, 33
HSL: 113.94°, 74.02%, 49.80%
HSV / HSB: 113.94°, 85.07%, 86.67%
CMYK (approx.): 76.47%, 0.00%, 85.07%, 13.33%
CIE XYZ (D65, Y = 100 for white): 27.546, 52.551, 10.130
CIELAB (D65, 2° observer): 77.609, -72.601, 70.775
WCAG relative luminance: 0.52553
24-bit decimal: 3464481

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 #34DD21 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: 11.51:1

Normal text: AAA
Large text: AAA

White text: 1.82:1

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

#CA21DD sits half a turn (180°) from #34DD21 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.

#34DD21 #CA21DD

Analogous

#92DD21 and #21DD6C sit 30° to either side of #34DD21. 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.

#92DD21 #34DD21 #21DD6C

Triadic

#34DD21, #2134DD and #DD2134 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#34DD21 #2134DD #DD2134

Split complementary

Start at #34DD21 and look across the wheel. #6C21DD and #DD2192 sit 30° to either side of its exact opposite, giving you two different accent choices.

#34DD21 #6C21DD #DD2192

Square

Starting with #34DD21, each quarter turn (90°) takes you to the next hue: #2192DD, #CA21DD, then #DD6C21. Across the square, #34DD21 pairs with #CA21DD, and #2192DD with #DD6C21.

#34DD21 #2192DD #CA21DD #DD6C21

Tetradic

#34DD21 and #CA21DD are opposites, as are #21DDCA and #DD2134. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#34DD21 #21DDCA #CA21DD #DD2134

Tints

Mixing #34DD21 with white in 20% steps produces this scale. The first mixture, #5DE44D, keeps 80% of the original. By #D6F8D3, the mixture is 80% white.

#34DD21 #5DE44D #85EB7A #AEF1A6 #D6F8D3 #FFFFFF

Shades

Mixing #34DD21 with black in 20% steps produces this scale. The first mixture, #2AB11A, keeps 80% of the original. By #0A2C07, the mixture is 80% black.

#34DD21 #2AB11A #1F8514 #15580D #0A2C07 #000000

Tones

Mixing #34DD21 with middle gray in 20% steps produces this scale. The first mixture, #43CA34, keeps 80% of the original. By #71936D, the mixture is 80% middle gray.

#34DD21 #43CA34 #52B847 #62A55A #71936D #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

#34DD21

RGB

rgb(52 221 33)

HSL

hsl(113.936 74.016% 49.804%)

CSS example

.color-sample {
  background-color: #34DD21;
  color: #000000;
}

Channel breakdown

RGB

#34DD21 uses 52 red, 221 green and 33 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 20.4%

Green 86.7%

Blue 12.9%

CMYK

A simple CMYK estimate for #34DD21 is 76.5% cyan, 0.0% magenta, 85.1% yellow and 13.3% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 76.5%

Magenta 0.0%

Yellow 85.1%

Black 13.3%

Nearby colors

The nearest shorthand match is #33DD22. Its matching digit pairs let you write it as #3D2 in CSS. For a modern design, keep #34DD21 when you want an exact match. Use its web-safe neighbor, #33CC33, when matching a legacy palette of 216 colors.

Nearest shorthand: #33DD22 Nearest web-safe: #33CC33

Gradient to complement

#34DD21 #4DBE40 #669E60 #7F7F7F #98609E #B140BE #CA21DD

Color vision previews

Compare how #34DD21 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.

#E2C700

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.

#D0BB3C

Tritanopia

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

#00D6BC

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.

#BCCE0A

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.

#B4C734

Tritanomaly (50%)

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

#42D979

Grayscale (luminance)

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

#C0C0C0

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.

#90CF8E

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 0.03434 G 0.72306 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 0.43226 G 0.85441 B 0.28661

Linear Display P3

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

R 0.15661 G 0.70019 B 0.06678

CIE xyY

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

x 0.305 y 0.582 Y 52.551

CMY

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

C % 79.608 M % 13.333 Y % 87.059

Binary RGB

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

00110100 11011101 00100001