HEX atlas value

#99C251

#99C251 is a cool green HEX color close to Yellow Green. According to Colors Encyclopedia, it converts to RGB 153, 194, 81, HSL 82, 48%, 54%, has luminance 0.4595, and belongs to the earth tone group.

green cool earth-tone

#99C251 Sample readable text

HEX #99C251

RGB rgb(153, 194, 81)

HSL hsl(82 48% 54%)

CMYK cmyk(21, 0, 58, 24)

Luminance 0.4595

Contrast Black 10.19:1White 2.06:1

CSS

--color-99c251: #99C251;
.background-99c251 { background-color: #99C251; }
.text-99c251 { color: #99C251; }

Luminance0.4595

Black text10.19:1AA Pass

White text2.06:1AA Fail

hexCanonical HEX value

rgbRed, green, blue channels

hslHue, saturation, lightness

cmykApproximate print conversion

wcagAA and AAA contrast options

harmoniesMathematical harmony sets

variantsGenerated tone variants

nearestColorsKnowledge graph neighbors

Structured sections

Color systems

{"hex":"#99C251","rgb":[153,194,81],"hsl":[82,48,54],"cmyk":[21,0,58,24],"luminance":0.4595,"contrast":{"black":10.19,"white":2.06}}

WCAG

{"AA":["#000000","#1A1A1A","#36454F"],"AAA":["#000000","#1A1A1A"]}

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":10.19,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":2.06,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#C1DA95","hex":"#C1DA95","family":"green","bestTextColor":"#000000","contrastBlack":13.73,"contrastWhite":1.53,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#A0DC38","hex":"#A0DC38","family":"green","bestTextColor":"#000000","contrastBlack":12.79,"contrastWhite":1.64,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"Yellow Green","hex":"#9ACD32","family":"green","bestTextColor":"#000000","contrastBlack":11.15,"contrastWhite":1.88,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"Pistachio","hex":"#93C572","family":"green","bestTextColor":"#000000","contrastBlack":10.47,"contrastWhite":2.01,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#C2B351","hex":"#C2B351","family":"yellow","bestTextColor":"#000000","contrastBlack":9.86,"contrastWhite":2.13,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]}]

AI context

{"semanticGroups":["cool green","earth tone","earth tone green","Yellow Green adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","natural palettes","botanical and wellness palettes"],"contrastSafeWith":["#000000","#1A1A1A","#36454F"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/99c251.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/yellow-green.json","https://www.colorsencyclopedia.com/api/colors/pistachio.json","https://www.colorsencyclopedia.com/api/colors/brass.json"]}

Harmonies

{"complementary":"#7B51C2","analogous":["#C2B351","#60C251"],"triadic":["#5199C2","#C25199"],"tetradic":["#51C2B3","#7B51C2","#C25160"],"splitComplementary":["#5160C2","#B351C2"],"monochromatic":["#C1DA95","#99C251","#688830"]}

Variants

{"light":"#C1DA95","dark":"#688830","saturated":"#A0DC38","desaturated":"#92A86B","pastel":"#CEDBB8","neon":"#B8FF3D"}

Nearest named colors

[{"slug":"yellow-green","name":"Yellow Green","hex":"#9ACD32","distance":32.90896534380867},{"slug":"pistachio","name":"Pistachio","hex":"#93C572","distance":33.67491648096547},{"slug":"brass","name":"Brass","hex":"#B5A642","distance":42.34383071948026},{"slug":"brushed-brass","name":"Brushed Brass","hex":"#B5A642","distance":42.34383071948026},{"slug":"moss-green","name":"Moss Green","hex":"#8A9A5B","distance":43.87482193696061}]

HEX meaning and use

About #99C251

#99C251 is classified as a cool green value with earth tone visual character. #99C251 is visually closest to Yellow Green, a named green color with HEX #9ACD32.

The RGB channels are 153, 194, and 81, with green carrying the strongest channel weight. In HSL, the hue is 82deg with 48% saturation and 54% lightness, so this page treats it as a moderate-saturation, mid-lightness atlas color rather than a generic swatch.

According to Colors Encyclopedia, this HEX value works best for color conversion, WCAG contrast checks, CSS color tokens, and natural palettes. Its luminance is 0.4595, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 32.91, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text10.19:1AA Pass

White text2.06:1AA Fail

AA text options: #000000, #1A1A1A, #36454F.

AAA text options: #000000, #1A1A1A.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #99C251 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#00000010.19:1 · AAA

White text#FFFFFF2.06:1 · Fail

Accessible Alternatives

#C1DA95#000000 text · best 13.73:1#C1DA95

#A0DC38#000000 text · best 12.79:1#A0DC38

Yellow Green#000000 text · best 11.15:1#9ACD32

Pistachio#000000 text · best 10.47:1#93C572

#C2B351#000000 text · best 9.86:1#C2B351

Generated Palette

#99C251#99C251

#7B51C2#7B51C2

#C2B351#C2B351

#60C251#60C251

#C1DA95#C1DA95

#688830#688830

Color Harmonies

#7B51C2#7B51C2

#C2B351#C2B351

#60C251#60C251

#5199C2#5199C2

#C25199#C25199

Variants

#C1DA95#C1DA95

#688830#688830

#A0DC38#A0DC38

#92A86B#92A86B

#CEDBB8#CEDBB8

#B8FF3D#B8FF3D

Nearest Named Colors

Yellow Green#9ACD32

Pistachio#93C572

Brass#B5A642

Brushed Brass#B5A642

Moss Green#8A9A5B

#99C251

CSS

Machine-Readable HEX Data (JSON)

About #99C251

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides