HEX atlas value

#A1B81E

#A1B81E is a warm yellow HEX color close to Acid Green. According to Colors Encyclopedia, it converts to RGB 161, 184, 30, HSL 69, 72%, 42%, has luminance 0.4195, and belongs to the vibrant group.

yellow warm vibrant

#A1B81E Sample readable text

HEX #A1B81E

RGB rgb(161, 184, 30)

HSL hsl(69 72% 42%)

CMYK cmyk(13, 0, 84, 28)

Luminance 0.4195

Contrast Black 9.39:1White 2.24:1

CSS

--color-a1b81e: #A1B81E;
.background-a1b81e { background-color: #A1B81E; }
.text-a1b81e { color: #A1B81E; }

Luminance0.4195

Black text9.39:1AA Pass

White text2.24:1AA 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":"#A1B81E","rgb":[161,184,30],"hsl":[69,72,42],"cmyk":[13,0,84,28],"luminance":0.4195,"contrast":{"black":9.39,"white":2.24}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":9.39,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":2.24,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#CCE250","hex":"#CCE250","family":"yellow","bestTextColor":"#000000","contrastBlack":14.56,"contrastWhite":1.44,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#B2D006","hex":"#B2D006","family":"yellow","bestTextColor":"#000000","contrastBlack":11.92,"contrastWhite":1.76,"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"]},{"name":"Peridot","hex":"#B4C424","family":"yellow","bestTextColor":"#000000","contrastBlack":10.86,"contrastWhite":1.93,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#351EB8","hex":"#351EB8","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":2.03,"contrastWhite":10.34,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]}]

AI context

{"semanticGroups":["warm yellow","vibrant","vibrant yellow","Acid Green adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-energy accents","highlight and warning systems"],"contrastSafeWith":["#000000","#1A1A1A"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/a1b81e.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/acid-green.json","https://www.colorsencyclopedia.com/api/colors/peridot.json","https://www.colorsencyclopedia.com/api/colors/yellow-green.json"]}

Harmonies

{"complementary":"#351EB8","analogous":["#B8821E","#54B81E"],"triadic":["#1EA1B8","#B81EA1"],"tetradic":["#1EB882","#351EB8","#B81E54"],"splitComplementary":["#1E54B8","#821EB8"],"monochromatic":["#CCE250","#A1B81E","#5C6911"]}

Variants

{"light":"#CCE250","dark":"#5C6911","saturated":"#B2D006","desaturated":"#91A136","pastel":"#CCDB7B","neon":"#D9FF00"}

Nearest named colors

[{"slug":"acid-green","name":"Acid Green","hex":"#B0BF1A","distance":17.029386365926403},{"slug":"peridot","name":"Peridot","hex":"#B4C424","distance":23.259406699226016},{"slug":"yellow-green","name":"Yellow Green","hex":"#9ACD32","distance":29.832867780352597},{"slug":"brass","name":"Brass","hex":"#B5A642","distance":44.94441010848846},{"slug":"brushed-brass","name":"Brushed Brass","hex":"#B5A642","distance":44.94441010848846}]

HEX meaning and use

About #A1B81E

#A1B81E is classified as a warm yellow value with vibrant visual character. #A1B81E is visually closest to Acid Green, a named yellow color with HEX #B0BF1A.

The RGB channels are 161, 184, and 30, with green carrying the strongest channel weight. In HSL, the hue is 69deg with 72% saturation and 42% 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 0.4195, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 17.03, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text9.39:1AA Pass

White text2.24:1AA Fail

AA text options: #000000, #1A1A1A.

AAA text options: #000000, #1A1A1A.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #A1B81E needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000009.39:1 · AAA

White text#FFFFFF2.24:1 · Fail

Accessible Alternatives

#CCE250#000000 text · best 14.56:1#CCE250

#B2D006#000000 text · best 11.92:1#B2D006

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

Peridot#000000 text · best 10.86:1#B4C424

#351EB8#FFFFFF text · best 10.34:1#351EB8

Generated Palette

#A1B81E#A1B81E

#351EB8#351EB8

#B8821E#B8821E

#54B81E#54B81E

#CCE250#CCE250

#5C6911#5C6911

Color Harmonies

#351EB8#351EB8

#B8821E#B8821E

#54B81E#54B81E

#1EA1B8#1EA1B8

#B81EA1#B81EA1

Variants

#CCE250#CCE250

#5C6911#5C6911

#B2D006#B2D006

#91A136#91A136

#CCDB7B#CCDB7B

#D9FF00#D9FF00

Nearest Named Colors

Acid Green#B0BF1A

Peridot#B4C424

Yellow Green#9ACD32

Brass#B5A642

Brushed Brass#B5A642

#A1B81E

CSS

Machine-Readable HEX Data (JSON)

About #A1B81E

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides