HEX atlas value

#A5B210

#A5B210 is a warm yellow HEX color close to Acid Green. According to Colors Encyclopedia, it converts to RGB 165, 178, 16, HSL 65, 84%, 38%, has luminance 0.3988, and belongs to the vibrant group.

yellow warm vibrant

#A5B210 Sample readable text

HEX #A5B210

RGB rgb(165, 178, 16)

HSL hsl(65 84% 38%)

CMYK cmyk(7, 0, 91, 30)

Luminance 0.3988

Contrast Black 8.98:1White 2.34:1

CSS

--color-a5b210: #A5B210;
.background-a5b210 { background-color: #A5B210; }
.text-a5b210 { color: #A5B210; }

Luminance0.3988

Black text8.98:1AA Pass

White text2.34:1AA 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":"#A5B210","rgb":[165,178,16],"hsl":[65,84,38],"cmyk":[7,0,91,30],"luminance":0.3988,"contrast":{"black":8.98,"white":2.34}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":8.98,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":2.34,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#DDED31","hex":"#DDED31","family":"yellow","bestTextColor":"#000000","contrastBlack":16.23,"contrastWhite":1.29,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#1D10B2","hex":"#1D10B2","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":1.77,"contrastWhite":11.86,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"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":"#B2C200","hex":"#B2C200","family":"yellow","bestTextColor":"#000000","contrastBlack":10.61,"contrastWhite":1.98,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]}]

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/a5b210.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":"#1D10B2","analogous":["#B26E10","#53B210"],"triadic":["#10A5B2","#B210A5"],"tetradic":["#10B26E","#1D10B2","#B21053"],"splitComplementary":["#1053B2","#6E10B2"],"monochromatic":["#DDED31","#A5B210","#575E08"]}

Variants

{"light":"#DDED31","dark":"#575E08","saturated":"#B2C200","desaturated":"#939D25","pastel":"#D7E260","neon":"#D7EB00"}

Nearest named colors

[{"slug":"acid-green","name":"Acid Green","hex":"#B0BF1A","distance":19.748417658131498},{"slug":"peridot","name":"Peridot","hex":"#B4C424","distance":30.805843601498726},{"slug":"yellow-green","name":"Yellow Green","hex":"#9ACD32","distance":44.78839135311738},{"slug":"dark-goldenrod","name":"Dark Goldenrod","hex":"#B8860B","distance":48.187135212627034},{"slug":"brass","name":"Brass","hex":"#B5A642","distance":53.85164807134504}]

HEX meaning and use

About #A5B210

#A5B210 is classified as a warm yellow value with vibrant visual character. #A5B210 is visually closest to Acid Green, a named yellow color with HEX #B0BF1A.

The RGB channels are 165, 178, and 16, with green carrying the strongest channel weight. In HSL, the hue is 65deg with 84% saturation and 38% 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 0.3988, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 19.75, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text8.98:1AA Pass

White text2.34:1AA Fail

AA text options: #000000, #1A1A1A.

AAA text options: #000000, #1A1A1A.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #A5B210 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000008.98:1 · AAA

White text#FFFFFF2.34:1 · Fail

Accessible Alternatives

#DDED31#000000 text · best 16.23:1#DDED31

#1D10B2#FFFFFF text · best 11.86:1#1D10B2

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

Peridot#000000 text · best 10.86:1#B4C424

#B2C200#000000 text · best 10.61:1#B2C200

Generated Palette

#A5B210#A5B210

#1D10B2#1D10B2

#B26E10#B26E10

#53B210#53B210

#DDED31#DDED31

#575E08#575E08

Color Harmonies

#1D10B2#1D10B2

#B26E10#B26E10

#53B210#53B210

#10A5B2#10A5B2

#B210A5#B210A5

Variants

#DDED31#DDED31

#575E08#575E08

#B2C200#B2C200

#939D25#939D25

#D7E260#D7E260

#D7EB00#D7EB00

Nearest Named Colors

Acid Green#B0BF1A

Peridot#B4C424

Yellow Green#9ACD32

Dark Goldenrod#B8860B

Brass#B5A642

#A5B210

CSS

Machine-Readable HEX Data (JSON)

About #A5B210

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides