HEX atlas value

#66E147

#66E147 is a cool green HEX color close to Toxic Green. According to Colors Encyclopedia, it converts to RGB 102, 225, 71, HSL 108, 72%, 58%, has luminance 0.5713, and belongs to the vibrant group.

green cool vibrant

#66E147 Sample readable text

HEX #66E147

RGB rgb(102, 225, 71)

HSL hsl(108 72% 58%)

CMYK cmyk(55, 0, 68, 12)

Luminance 0.5713

Contrast Black 12.43:1White 1.69:1

CSS

--color-66e147: #66E147;
.background-66e147 { background-color: #66E147; }
.text-66e147 { color: #66E147; }

Luminance0.5713

Black text12.43:1AA Pass

White text1.69:1AA 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":"#66E147","rgb":[102,225,71],"hsl":[108,72,58],"cmyk":[55,0,68,12],"luminance":0.5713,"contrast":{"black":12.43,"white":1.69}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":12.43,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":1.69,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#A7EE96","hex":"#A7EE96","family":"green","bestTextColor":"#000000","contrastBlack":15.31,"contrastWhite":1.37,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#57F92F","hex":"#57F92F","family":"green","bestTextColor":"#000000","contrastBlack":15,"contrastWhite":1.4,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#B3E147","hex":"#B3E147","family":"green","bestTextColor":"#000000","contrastBlack":13.78,"contrastWhite":1.52,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#47E175","hex":"#47E175","family":"green","bestTextColor":"#000000","contrastBlack":12.29,"contrastWhite":1.71,"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/66e147.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":"#C247E1","analogous":["#B3E147","#47E175"],"triadic":["#4766E1","#E14766"],"tetradic":["#47B3E1","#C247E1","#E17547"],"splitComplementary":["#7547E1","#E147B3"],"monochromatic":["#A7EE96","#66E147","#3AAF1D"]}

Variants

{"light":"#A7EE96","dark":"#3AAF1D","saturated":"#57F92F","desaturated":"#74C95E","pastel":"#C5ECBB","neon":"#74FF52"}

Nearest named colors

[{"slug":"toxic-green","name":"Toxic Green","hex":"#61DE2A","distance":29.58039891549808},{"slug":"emerald","name":"Emerald","hex":"#50C878","distance":59.2452529743945},{"slug":"paris-green","name":"Paris Green","hex":"#50C878","distance":59.2452529743945},{"slug":"lime-green","name":"Lime Green","hex":"#32CD32","distance":59.53990258641679},{"slug":"yellow-green","name":"Yellow Green","hex":"#9ACD32","distance":59.53990258641679}]

HEX meaning and use

About #66E147

#66E147 is classified as a cool green value with vibrant visual character. #66E147 is visually closest to Toxic Green, a named green color with HEX #61DE2A.

The RGB channels are 102, 225, and 71, with green carrying the strongest channel weight. In HSL, the hue is 108deg with 72% saturation and 58% 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 0.5713, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 29.58, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text12.43:1AA Pass

White text1.69:1AA Fail

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

AAA text options: #000000, #1A1A1A.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #66E147 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#00000012.43:1 · AAA

White text#FFFFFF1.69:1 · Fail

Accessible Alternatives

#A7EE96#000000 text · best 15.31:1#A7EE96

#57F92F#000000 text · best 15:1#57F92F

#B3E147#000000 text · best 13.78:1#B3E147

#47E175#000000 text · best 12.29:1#47E175

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

Generated Palette

#66E147#66E147

#C247E1#C247E1

#B3E147#B3E147

#47E175#47E175

#A7EE96#A7EE96

#3AAF1D#3AAF1D

Color Harmonies

#C247E1#C247E1

#B3E147#B3E147

#47E175#47E175

#4766E1#4766E1

#E14766#E14766

Variants

#A7EE96#A7EE96

#3AAF1D#3AAF1D

#57F92F#57F92F

#74C95E#74C95E

#C5ECBB#C5ECBB

#74FF52#74FF52

Nearest Named Colors

Toxic Green#61DE2A

Emerald#50C878

Paris Green#50C878

Lime Green#32CD32

Yellow Green#9ACD32

#66E147

CSS

Machine-Readable HEX Data (JSON)

About #66E147

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides