#97DC21

sRGB · 151 / 220 / 33

#97DC21 belongs to the yellow-green family. Its hex code tells a screen to mix 151 red, 220 green and 33 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 82.1° lands in the yellow-green region. Its 73.9% saturation makes it strong in color at this lightness. HSL lightness is 49.6% 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 (12.58:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 151, 220, 33
HSL: 82.14°, 73.91%, 49.61%
HSV / HSB: 82.14°, 85.00%, 86.27%
CMYK (approx.): 31.36%, 0.00%, 85.00%, 13.73%
CIE XYZ (D65, Y = 100 for white): 38.629, 57.874, 10.575
CIELAB (D65, 2° observer): 80.669, -46.312, 74.746
WCAG relative luminance: 0.57876
24-bit decimal: 9952289

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 #97DC21 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 · 12.58:1

Normal text: AAA
Large text: AAA

White text · 1.67:1

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

#6621DC sits half a turn (180°) from #97DC21 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.

#97DC21 #6621DC

Analogous

#DCC321 and #3ADC21 sit 30° to either side of #97DC21. 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.

#DCC321 #97DC21 #3ADC21

Triadic

#97DC21, #2197DC and #DC2197 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#97DC21 #2197DC #DC2197

Split complementary

Start at #97DC21 and look across the wheel. #213ADC and #C421DC sit 30° to either side of its exact opposite, giving you two different accent choices.

#97DC21 #213ADC #C421DC

Square

Starting with #97DC21, each quarter turn (90°) takes you to the next hue: #21DCC3, #6621DC, then #DC2139. Across the square, #97DC21 pairs with #6621DC, and #21DCC3 with #DC2139.

#97DC21 #21DCC3 #6621DC #DC2139

Tetradic

#97DC21 and #6621DC are opposites, as are #21DC66 and #DC2197. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#97DC21 #21DC66 #6621DC #DC2197

Tints

Mixing #97DC21 with white in 20% steps produces this scale. The first mixture, #ACE34D, keeps 80% of the original. By #EAF8D3, the mixture is 80% white.

#97DC21 #ACE34D #C1EA7A #D5F1A6 #EAF8D3 #FFFFFF

Shades

Mixing #97DC21 with black in 20% steps produces this scale. The first mixture, #79B01A, keeps 80% of the original. By #1E2C07, the mixture is 80% black.

#97DC21 #79B01A #5B8414 #3C580D #1E2C07 #000000

Tones

Mixing #97DC21 with middle gray in 20% steps produces this scale. The first mixture, #92CA34, keeps 80% of the original. By #85926D, the mixture is 80% middle gray.

#97DC21 #92CA34 #8EB747 #89A55A #85926D #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

#97DC21

RGB

rgb(151 220 33)

HSL

hsl(82.139 73.913% 49.608%)

CSS example

.color-sample {
  background-color: #97DC21;
  color: #000000;
}

Channel breakdown

RGB

#97DC21 uses 151 red, 220 green and 33 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 59.2%

Green 86.3%

Blue 12.9%

CMYK

A simple CMYK estimate for #97DC21 is 31.4% cyan, 0.0% magenta, 85.0% yellow and 13.7% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 31.4%

Magenta 0.0%

Yellow 85.0%

Black 13.7%

Nearby colors

The nearest shorthand match is #99DD22. Its matching digit pairs let you write it as #9D2 in CSS. For a modern design, keep #97DC21 when you want an exact match. Use its web-safe neighbor, #99CC33, when matching a legacy palette of 216 colors.

Nearest shorthand · #99DD22 Nearest web-safe · #99CC33

Gradient to complement

#97DC21 #8FBD40 #879E5F #7F7F7F #765F9E #6E40BD #6621DC

Color vision previews

Compare how #97DC21 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.

#E7CB00

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.

#DDC73A

Tritanopia

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

#9CD2BC

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.

#CFD104

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.

#CCCE31

Tritanomaly (50%)

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

#9CD879

Grayscale (luminance)

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

#C8C8C8

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.

#B2D294

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 0.30947 G 0.71569 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 0.65118 G 0.85550 B 0.29533

Linear Display P3

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

R 0.38159 G 0.70221 B 0.07095

CIE xyY

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

x 0.361 y 0.540 Y 57.874

CMY

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

C % 40.784 M % 13.725 Y % 87.059

Binary RGB

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

10010111 11011100 00100001