HEX atlas value

#4DEF55

#4DEF55 is a cool green HEX color close to Toxic Green. According to Colors Encyclopedia, it converts to RGB 77, 239, 85, HSL 123, 84%, 62%, has luminance 0.6397, and belongs to the vibrant group.

green cool vibrant

#4DEF55 Sample readable text

HEX #4DEF55

RGB rgb(77, 239, 85)

HSL hsl(123 84% 62%)

CMYK cmyk(68, 0, 64, 6)

Luminance 0.6397

Contrast Black 13.79:1White 1.52:1

CSS

--color-4def55: #4DEF55;
.background-4def55 { background-color: #4DEF55; }
.text-4def55 { color: #4DEF55; }

Luminance0.6397

Black text13.79:1AA Pass

White text1.52:1AA 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":"#4DEF55","rgb":[77,239,85],"hsl":[123,84,62],"cmyk":[68,0,64,6],"luminance":0.6397,"contrast":{"black":13.79,"white":1.52}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":13.79,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":1.52,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#A1F7A5","hex":"#A1F7A5","family":"green","bestTextColor":"#000000","contrastBlack":16.36,"contrastWhite":1.28,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#3DFF47","hex":"#3DFF47","family":"green","bestTextColor":"#000000","contrastBlack":15.59,"contrastWhite":1.35,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#96EF4D","hex":"#96EF4D","family":"green","bestTextColor":"#000000","contrastBlack":14.75,"contrastWhite":1.42,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#4DEFA6","hex":"#4DEFA6","family":"green","bestTextColor":"#000000","contrastBlack":14.21,"contrastWhite":1.48,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"Toxic Green","hex":"#61DE2A","family":"green","bestTextColor":"#000000","contrastBlack":11.99,"contrastWhite":1.75,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]}]

AI context

{"semanticGroups":["cool green","vibrant","vibrant green","Toxic 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/4def55.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/toxic-green.json","https://www.colorsencyclopedia.com/api/colors/emerald.json","https://www.colorsencyclopedia.com/api/colors/paris-green.json"]}

Harmonies

{"complementary":"#EF4DE7","analogous":["#96EF4D","#4DEFA6"],"triadic":["#554DEF","#EF554D"],"tetradic":["#4D96EF","#EF4DE7","#EFA64D"],"splitComplementary":["#A64DEF","#EF4D96"],"monochromatic":["#A1F7A5","#4DEF55","#12CE1B"]}

Variants

{"light":"#A1F7A5","dark":"#12CE1B","saturated":"#3DFF47","desaturated":"#62DA68","pastel":"#C7F5C9","neon":"#66FF6E"}

Nearest named colors

[{"slug":"toxic-green","name":"Toxic Green","hex":"#61DE2A","distance":50.37856687124},{"slug":"emerald","name":"Emerald","hex":"#50C878","distance":52.48809388804284},{"slug":"paris-green","name":"Paris Green","hex":"#50C878","distance":52.48809388804284},{"slug":"lime-green","name":"Lime Green","hex":"#32CD32","distance":55.767373974394744},{"slug":"medium-sea-green","name":"Medium Sea Green","hex":"#3CB371","distance":68.3593446428504}]

HEX meaning and use

About #4DEF55

#4DEF55 is classified as a cool green value with vibrant visual character. #4DEF55 is visually closest to Toxic Green, a named green color with HEX #61DE2A.

The RGB channels are 77, 239, and 85, with green carrying the strongest channel weight. In HSL, the hue is 123deg 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 0.6397, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 50.38, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text13.79:1AA Pass

White text1.52:1AA Fail

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

AAA text options: #000000, #1A1A1A.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #4DEF55 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#00000013.79:1 · AAA

White text#FFFFFF1.52:1 · Fail

Accessible Alternatives

#A1F7A5#000000 text · best 16.36:1#A1F7A5

#3DFF47#000000 text · best 15.59:1#3DFF47

#96EF4D#000000 text · best 14.75:1#96EF4D

#4DEFA6#000000 text · best 14.21:1#4DEFA6

Toxic Green#000000 text · best 11.99:1#61DE2A

Generated Palette

#4DEF55#4DEF55

#EF4DE7#EF4DE7

#96EF4D#96EF4D

#4DEFA6#4DEFA6

#A1F7A5#A1F7A5

#12CE1B#12CE1B

Color Harmonies

#EF4DE7#EF4DE7

#96EF4D#96EF4D

#4DEFA6#4DEFA6

#554DEF#554DEF

#EF554D#EF554D

Variants

#A1F7A5#A1F7A5

#12CE1B#12CE1B

#3DFF47#3DFF47

#62DA68#62DA68

#C7F5C9#C7F5C9

#66FF6E#66FF6E

Nearest Named Colors

Toxic Green#61DE2A

Emerald#50C878

Paris Green#50C878

Lime Green#32CD32

Medium Sea Green#3CB371

#4DEF55

CSS

Machine-Readable HEX Data (JSON)

About #4DEF55

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides