HEX atlas value

#99D813

#99D813 is a cool green HEX color close to Yellow Green. According to Colors Encyclopedia, it converts to RGB 153, 216, 19, HSL 79, 84%, 46%, has luminance 0.5593, and belongs to the vibrant group.

green cool vibrant

#99D813 Sample readable text

HEX #99D813

RGB rgb(153, 216, 19)

HSL hsl(79 84% 46%)

CMYK cmyk(29, 0, 91, 15)

Luminance 0.5593

Contrast Black 12.19:1White 1.72:1

CSS

--color-99d813: #99D813;
.background-99d813 { background-color: #99D813; }
.text-99d813 { color: #99D813; }

Luminance0.5593

Black text12.19:1AA Pass

White text1.72:1AA 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":"#99D813","rgb":[153,216,19],"hsl":[79,84,46],"cmyk":[29,0,91,15],"luminance":0.5593,"contrast":{"black":12.19,"white":1.72}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":12.19,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":1.72,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"Chartreuse","hex":"#7FFF00","family":"green","bestTextColor":"#000000","contrastBlack":16.21,"contrastWhite":1.3,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#BFF056","hex":"#BFF056","family":"green","bestTextColor":"#000000","contrastBlack":15.81,"contrastWhite":1.33,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"Lawn Green","hex":"#7CFC00","family":"green","bestTextColor":"#000000","contrastBlack":15.78,"contrastWhite":1.33,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#A0EB00","hex":"#A0EB00","family":"green","bestTextColor":"#000000","contrastBlack":14.38,"contrastWhite":1.46,"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"]}]

AI context

{"semanticGroups":["cool green","vibrant","vibrant green","Yellow Green adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-energy accents","botanical and wellness palettes"],"contrastSafeWith":["#000000","#1A1A1A","#36454F"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/99d813.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/yellow-green.json","https://www.colorsencyclopedia.com/api/colors/acid-green.json","https://www.colorsencyclopedia.com/api/colors/peridot.json"]}

Harmonies

{"complementary":"#5113D8","analogous":["#D8B413","#37D813"],"triadic":["#1399D8","#D81399"],"tetradic":["#13D8B4","#5113D8","#D81337"],"splitComplementary":["#1337D8","#B413D8"],"monochromatic":["#BFF056","#99D813","#5D830B"]}

Variants

{"light":"#BFF056","dark":"#5D830B","saturated":"#A0EB00","desaturated":"#90BE2D","pastel":"#C8E882","neon":"#B5FF14"}

Nearest named colors

[{"slug":"yellow-green","name":"Yellow Green","hex":"#9ACD32","distance":32.90896534380867},{"slug":"acid-green","name":"Acid Green","hex":"#B0BF1A","distance":34.68429039204925},{"slug":"peridot","name":"Peridot","hex":"#B4C424","distance":37.656340767525464},{"slug":"lawn-green","name":"Lawn Green","hex":"#7CFC00","distance":49.9799959983992},{"slug":"chartreuse","name":"Chartreuse","hex":"#7FFF00","distance":50.57667446560717}]

HEX meaning and use

About #99D813

#99D813 is classified as a cool green value with vibrant visual character. #99D813 is visually closest to Yellow Green, a named green color with HEX #9ACD32.

The RGB channels are 153, 216, and 19, with green carrying the strongest channel weight. In HSL, the hue is 79deg with 84% saturation and 46% 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 high-energy accents. Its luminance is 0.5593, 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 text12.19:1AA Pass

White text1.72:1AA Fail

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

AAA text options: #000000, #1A1A1A.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #99D813 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#00000012.19:1 · AAA

White text#FFFFFF1.72:1 · Fail

Accessible Alternatives

Chartreuse#000000 text · best 16.21:1#7FFF00

#BFF056#000000 text · best 15.81:1#BFF056

Lawn Green#000000 text · best 15.78:1#7CFC00

#A0EB00#000000 text · best 14.38:1#A0EB00

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

Generated Palette

#99D813#99D813

#5113D8#5113D8

#D8B413#D8B413

#37D813#37D813

#BFF056#BFF056

#5D830B#5D830B

Color Harmonies

#5113D8#5113D8

#D8B413#D8B413

#37D813#37D813

#1399D8#1399D8

#D81399#D81399

Variants

#BFF056#BFF056

#5D830B#5D830B

#A0EB00#A0EB00

#90BE2D#90BE2D

#C8E882#C8E882

#B5FF14#B5FF14

Nearest Named Colors

Yellow Green#9ACD32

Acid Green#B0BF1A

Peridot#B4C424

Lawn Green#7CFC00

Chartreuse#7FFF00

#99D813

CSS

Machine-Readable HEX Data (JSON)

About #99D813

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides