HEX atlas value

#99EF4D

#99EF4D is a cool green HEX color close to Green Yellow. According to Colors Encyclopedia, it converts to RGB 153, 239, 77, HSL 92, 84%, 62%, has luminance 0.6904, and belongs to the vibrant group.

green cool vibrant

#99EF4D Sample readable text

HEX #99EF4D

RGB rgb(153, 239, 77)

HSL hsl(92 84% 62%)

CMYK cmyk(36, 0, 68, 6)

Luminance 0.6904

Contrast Black 14.81:1White 1.42:1

CSS

--color-99ef4d: #99EF4D;
.background-99ef4d { background-color: #99EF4D; }
.text-99ef4d { color: #99EF4D; }

Luminance0.6904

Black text14.81:1AA Pass

White text1.42:1AA 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":"#99EF4D","rgb":[153,239,77],"hsl":[92,84,62],"cmyk":[36,0,68,6],"luminance":0.6904,"contrast":{"black":14.81,"white":1.42}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":14.81,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":1.42,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#C9F7A1","hex":"#C9F7A1","family":"green","bestTextColor":"#000000","contrastBlack":17.3,"contrastWhite":1.21,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"Green Yellow","hex":"#ADFF2F","family":"green","bestTextColor":"#000000","contrastBlack":17.12,"contrastWhite":1.23,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#EAEF4D","hex":"#EAEF4D","family":"yellow","bestTextColor":"#000000","contrastBlack":16.95,"contrastWhite":1.24,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#98FF3D","hex":"#98FF3D","family":"green","bestTextColor":"#000000","contrastBlack":16.71,"contrastWhite":1.26,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"Pear","hex":"#D1E231","family":"yellow","bestTextColor":"#000000","contrastBlack":14.63,"contrastWhite":1.44,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]}]

AI context

{"semanticGroups":["cool green","vibrant","vibrant green","Green Yellow 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/99ef4d.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/green-yellow.json","https://www.colorsencyclopedia.com/api/colors/yellow-green.json","https://www.colorsencyclopedia.com/api/colors/pistachio.json"]}

Harmonies

{"complementary":"#A44DEF","analogous":["#EAEF4D","#4DEF52"],"triadic":["#4D99EF","#EF4D99"],"tetradic":["#4DEAEF","#A44DEF","#EF524D"],"splitComplementary":["#524DEF","#EF4DEA"],"monochromatic":["#C9F7A1","#99EF4D","#6ACE12"]}

Variants

{"light":"#C9F7A1","dark":"#6ACE12","saturated":"#98FF3D","desaturated":"#9ADA62","pastel":"#DCF5C7","neon":"#ADFF66"}

Nearest named colors

[{"slug":"green-yellow","name":"Green Yellow","hex":"#ADFF2F","distance":39.44616584663204},{"slug":"yellow-green","name":"Yellow Green","hex":"#9ACD32","distance":43.42810150121693},{"slug":"pistachio","name":"Pistachio","hex":"#93C572","distance":56.293871780150276},{"slug":"pear","name":"Pear","hex":"#D1E231","distance":63.94528911499267},{"slug":"peridot","name":"Peridot","hex":"#B4C424","distance":65.26101439603893}]

HEX meaning and use

About #99EF4D

#99EF4D is classified as a cool green value with vibrant visual character. #99EF4D is visually closest to Green Yellow, a named green color with HEX #ADFF2F.

The RGB channels are 153, 239, and 77, with green carrying the strongest channel weight. In HSL, the hue is 92deg with 84% saturation and 62% 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 0.6904, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 39.45, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text14.81:1AA Pass

White text1.42:1AA Fail

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

AAA text options: #000000, #1A1A1A.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #99EF4D needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#00000014.81:1 · AAA

White text#FFFFFF1.42:1 · Fail

Accessible Alternatives

#C9F7A1#000000 text · best 17.3:1#C9F7A1

Green Yellow#000000 text · best 17.12:1#ADFF2F

#EAEF4D#000000 text · best 16.95:1#EAEF4D

#98FF3D#000000 text · best 16.71:1#98FF3D

Pear#000000 text · best 14.63:1#D1E231

Generated Palette

#99EF4D#99EF4D

#A44DEF#A44DEF

#EAEF4D#EAEF4D

#4DEF52#4DEF52

#C9F7A1#C9F7A1

#6ACE12#6ACE12

Color Harmonies

#A44DEF#A44DEF

#EAEF4D#EAEF4D

#4DEF52#4DEF52

#4D99EF#4D99EF

#EF4D99#EF4D99

Variants

#C9F7A1#C9F7A1

#6ACE12#6ACE12

#98FF3D#98FF3D

#9ADA62#9ADA62

#DCF5C7#DCF5C7

#ADFF66#ADFF66

Nearest Named Colors

Green Yellow#ADFF2F

Yellow Green#9ACD32

Pistachio#93C572

Pear#D1E231

Peridot#B4C424

#99EF4D

CSS

Machine-Readable HEX Data (JSON)

About #99EF4D

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides