HEX atlas value

#B1E31C

#B1E31C is a cool green HEX color nearest Peridot. RGB 177, 227, 28, HSL 75° 78% 50%, luminance 0.6437; view contrast and conversions.

green cool vibrant

#B1E31C Sample readable text

HEX #B1E31C

RGB rgb(177, 227, 28)

HSL hsl(75 78% 50%)

CMYK cmyk(22, 0, 88, 11)

Luminance 0.6437

Contrast Black 13.87:1White 1.51:1

CSS

--color-b1e31c: #B1E31C;
.background-b1e31c { background-color: #B1E31C; }
.text-b1e31c { color: #B1E31C; }

HEX meaning and use

About #B1E31C

#B1E31C is classified as a cool green value with vibrant visual character. #B1E31C is visually closest to Peridot, a named yellow color with HEX #B4C424.

The RGB channels are 177, 227, and 28, with green carrying the strongest channel weight. In HSL, the hue is 75deg with 78% saturation and 50% lightness, so this page treats it as a high-saturation, mid-lightness atlas color rather than a generic swatch.

Practical uses for this HEX value include color conversion, WCAG contrast checks, CSS color tokens, and high-energy accents. Its luminance is 0.6437, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 32.16, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text13.87:1AA Pass

White text1.51:1AA Fail

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

AAA text options: #000000, #1A1A1A.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #B1E31C needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#00000013.87:1 · AAA

White text#FFFFFF1.51:1 · Fail

Accessible Alternatives

#BFFF00#BFFF00 · #000000 text · best 17.52:1 Green Yellow#ADFF2F · #000000 text · best 17.12:1 #CDED6E#CDED6E · #000000 text · best 15.93:1 Pear#D1E231 · #000000 text · best 14.63:1 #4EE31C#4EE31C · #000000 text · best 12.33:1

Generated Palette

#B1E31C#B1E31C

#4E1CE3#4E1CE3

#E3B11C#E3B11C

#4EE31C#4EE31C

#CDED6E#CDED6E

#719112#719112

Color Harmonies

#4E1CE3#4E1CE3

#E3B11C#E3B11C

#4EE31C#4EE31C

#1CB1E3#1CB1E3

#E31CB1#E31CB1

Variants

#CDED6E#CDED6E

#719112#719112

#BFFF00#BFFF00

#A3C738#A3C738

#D3E797#D3E797

#C9FF29#C9FF29

Nearest Named Colors

Peridot#B4C424

Green Yellow#ADFF2F

Acid Green#B0BF1A

Pear#D1E231

Yellow Green#9ACD32

Luminance0.6437

Black text13.87:1AA Pass

White text1.51:1AA 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":"#B1E31C","rgb":[177,227,28],"hsl":[75,78,50],"cmyk":[22,0,88,11],"luminance":0.6437,"contrast":{"black":13.87,"white":1.51}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":13.87,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":1.51,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#BFFF00","hex":"#BFFF00","family":"green","bestTextColor":"#000000","contrastBlack":17.52,"contrastWhite":1.2,"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":"#CDED6E","hex":"#CDED6E","family":"green","bestTextColor":"#000000","contrastBlack":15.93,"contrastWhite":1.32,"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"]},{"name":"#4EE31C","hex":"#4EE31C","family":"green","bestTextColor":"#000000","contrastBlack":12.33,"contrastWhite":1.7,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]}]

AI context

{"semanticGroups":["cool green","vibrant","vibrant green","Peridot 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/b1e31c.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/peridot.json","https://www.colorsencyclopedia.com/api/colors/green-yellow.json","https://www.colorsencyclopedia.com/api/colors/acid-green.json"]}

Harmonies

{"complementary":"#4E1CE3","analogous":["#E3B11C","#4EE31C"],"triadic":["#1CB1E3","#E31CB1"],"tetradic":["#1CE3B1","#4E1CE3","#E31C4E"],"splitComplementary":["#1C4EE3","#B11CE3"],"monochromatic":["#CDED6E","#B1E31C","#719112"]}

Variants

{"light":"#CDED6E","dark":"#719112","saturated":"#BFFF00","desaturated":"#A3C738","pastel":"#D3E797","neon":"#C9FF29"}

Nearest named colors

[{"slug":"peridot","name":"Peridot","hex":"#B4C424","distance":32.155870381627054},{"slug":"green-yellow","name":"Green Yellow","hex":"#ADFF2F","distance":34.07345007480164},{"slug":"acid-green","name":"Acid Green","hex":"#B0BF1A","distance":36.069377593742864},{"slug":"pear","name":"Pear","hex":"#D1E231","distance":38.28837943815329},{"slug":"yellow-green","name":"Yellow Green","hex":"#9ACD32","distance":38.691084244306204}]

#B1E31C

CSS

About #B1E31C

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Machine-Readable HEX Data (JSON)

Related HEX Guides