HEX atlas value

#99B81E

#99B81E is a cool green HEX color close to Acid Green. According to Colors Encyclopedia, it converts to RGB 153, 184, 30, HSL 72, 72%, 42%, has luminance 0.4115, and belongs to the vibrant and jewel tone groups.

green cool vibrant jewel-tone

#99B81E Sample readable text

HEX #99B81E

RGB rgb(153, 184, 30)

HSL hsl(72 72% 42%)

CMYK cmyk(17, 0, 84, 28)

Luminance 0.4115

Contrast Black 9.23:1White 2.28:1

CSS

--color-99b81e: #99B81E;
.background-99b81e { background-color: #99B81E; }
.text-99b81e { color: #99B81E; }

Luminance0.4115

Black text9.23:1AA Pass

White text2.28:1AA 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":"#99B81E","rgb":[153,184,30],"hsl":[72,72,42],"cmyk":[17,0,84,28],"luminance":0.4115,"contrast":{"black":9.23,"white":2.28}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":9.23,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":2.28,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#C5E250","hex":"#C5E250","family":"green","bestTextColor":"#000000","contrastBlack":14.37,"contrastWhite":1.46,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#A8D006","hex":"#A8D006","family":"green","bestTextColor":"#000000","contrastBlack":11.69,"contrastWhite":1.8,"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":"Peridot","hex":"#B4C424","family":"yellow","bestTextColor":"#000000","contrastBlack":10.86,"contrastWhite":1.93,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"Acid Green","hex":"#B0BF1A","family":"yellow","bestTextColor":"#000000","contrastBlack":10.31,"contrastWhite":2.04,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]}]

AI context

{"semanticGroups":["cool green","vibrant","jewel tone","vibrant green","jewel tone green","Acid Green adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","rich accent palettes","high-energy accents","botanical and wellness palettes"],"contrastSafeWith":["#000000","#1A1A1A"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/99b81e.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/acid-green.json","https://www.colorsencyclopedia.com/api/colors/yellow-green.json","https://www.colorsencyclopedia.com/api/colors/peridot.json"]}

Harmonies

{"complementary":"#3D1EB8","analogous":["#B88A1E","#4CB81E"],"triadic":["#1E99B8","#B81E99"],"tetradic":["#1EB88A","#3D1EB8","#B81E4C"],"splitComplementary":["#1E4CB8","#8A1EB8"],"monochromatic":["#C5E250","#99B81E","#586911"]}

Variants

{"light":"#C5E250","dark":"#586911","saturated":"#A8D006","desaturated":"#8BA136","pastel":"#C8DB7B","neon":"#CCFF00"}

Nearest named colors

[{"slug":"acid-green","name":"Acid Green","hex":"#B0BF1A","distance":24.372115213907882},{"slug":"yellow-green","name":"Yellow Green","hex":"#9ACD32","distance":29.017236257093817},{"slug":"peridot","name":"Peridot","hex":"#B4C424","distance":30.14962686336267},{"slug":"brass","name":"Brass","hex":"#B5A642","distance":49.03060268852505},{"slug":"brushed-brass","name":"Brushed Brass","hex":"#B5A642","distance":49.03060268852505}]

HEX meaning and use

About #99B81E

#99B81E is classified as a cool green value with vibrant and jewel tone visual character. #99B81E is visually closest to Acid Green, a named yellow color with HEX #B0BF1A.

The RGB channels are 153, 184, and 30, with green carrying the strongest channel weight. In HSL, the hue is 72deg with 72% saturation and 42% lightness, so this page treats it as a high-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 rich accent palettes. Its luminance is 0.4115, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 24.37, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text9.23:1AA Pass

White text2.28:1AA Fail

AA text options: #000000, #1A1A1A.

AAA text options: #000000, #1A1A1A.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #99B81E needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000009.23:1 · AAA

White text#FFFFFF2.28:1 · Fail

Accessible Alternatives

#C5E250#000000 text · best 14.37:1#C5E250

#A8D006#000000 text · best 11.69:1#A8D006

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

Peridot#000000 text · best 10.86:1#B4C424

Acid Green#000000 text · best 10.31:1#B0BF1A

Generated Palette

#99B81E#99B81E

#3D1EB8#3D1EB8

#B88A1E#B88A1E

#4CB81E#4CB81E

#C5E250#C5E250

#586911#586911

Color Harmonies

#3D1EB8#3D1EB8

#B88A1E#B88A1E

#4CB81E#4CB81E

#1E99B8#1E99B8

#B81E99#B81E99

Variants

#C5E250#C5E250

#586911#586911

#A8D006#A8D006

#8BA136#8BA136

#C8DB7B#C8DB7B

Electric Lime#CCFF00

Nearest Named Colors

Acid Green#B0BF1A

Yellow Green#9ACD32

Peridot#B4C424

Brass#B5A642

Brushed Brass#B5A642

#99B81E

CSS

Machine-Readable HEX Data (JSON)

About #99B81E

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides