HEX atlas value

#A7A21B

#A7A21B is a warm yellow HEX color close to Acid Green. According to Colors Encyclopedia, it converts to RGB 167, 162, 27, HSL 58, 72%, 38%, has luminance 0.3414, and belongs to the vibrant group.

yellow warm vibrant

#A7A21B Sample readable text

HEX #A7A21B

RGB rgb(167, 162, 27)

HSL hsl(58 72% 38%)

CMYK cmyk(0, 3, 84, 35)

Luminance 0.3414

Contrast Black 7.83:1White 2.68:1

CSS

--color-a7a21b: #A7A21B;
.background-a7a21b { background-color: #A7A21B; }
.text-a7a21b { color: #A7A21B; }

Luminance0.3414

Black text7.83:1AA Pass

White text2.68:1AA 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":"#A7A21B","rgb":[167,162,27],"hsl":[58,72,38],"cmyk":[0,3,84,35],"luminance":0.3414,"contrast":{"black":7.83,"white":2.68}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":7.83,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":2.68,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#E0DA3E","hex":"#E0DA3E","family":"yellow","bestTextColor":"#000000","contrastBlack":14.27,"contrastWhite":1.47,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#1B20A7","hex":"#1B20A7","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":1.81,"contrastWhite":11.59,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Peridot","hex":"#B4C424","family":"yellow","bestTextColor":"#000000","contrastBlack":10.86,"contrastWhite":1.93,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"Acid Green","hex":"#B0BF1A","family":"yellow","bestTextColor":"#000000","contrastBlack":10.31,"contrastWhite":2.04,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#BCB606","hex":"#BCB606","family":"yellow","bestTextColor":"#000000","contrastBlack":9.83,"contrastWhite":2.14,"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/a7a21b.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/acid-green.json","https://www.colorsencyclopedia.com/api/colors/dark-goldenrod.json","https://www.colorsencyclopedia.com/api/colors/peridot.json"]}

Harmonies

{"complementary":"#1B20A7","analogous":["#A75C1B","#66A71B"],"triadic":["#1BA7A2","#A21BA7"],"tetradic":["#1BA75C","#1B20A7","#A71B66"],"splitComplementary":["#1B66A7","#5C1BA7"],"monochromatic":["#E0DA3E","#A7A21B","#58550E"]}

Variants

{"light":"#E0DA3E","dark":"#58550E","saturated":"#BCB606","desaturated":"#918E30","pastel":"#D6D36B","neon":"#EBE300"}

Nearest named colors

[{"slug":"acid-green","name":"Acid Green","hex":"#B0BF1A","distance":30.380915061926625},{"slug":"dark-goldenrod","name":"Dark Goldenrod","hex":"#B8860B","distance":36.45545226711637},{"slug":"peridot","name":"Peridot","hex":"#B4C424","distance":37.49666651850535},{"slug":"brass","name":"Brass","hex":"#B5A642","distance":41.6293165929973},{"slug":"brushed-brass","name":"Brushed Brass","hex":"#B5A642","distance":41.6293165929973}]

HEX meaning and use

About #A7A21B

#A7A21B is classified as a warm yellow value with vibrant visual character. #A7A21B is visually closest to Acid Green, a named yellow color with HEX #B0BF1A.

The RGB channels are 167, 162, and 27, with red carrying the strongest channel weight. In HSL, the hue is 58deg with 72% 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 0.3414, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 30.38, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text7.83:1AA Pass

White text2.68:1AA Fail

AA text options: #000000, #1A1A1A.

AAA text options: #000000.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #A7A21B needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000007.83:1 · AAA

White text#FFFFFF2.68:1 · Fail

Accessible Alternatives

#E0DA3E#000000 text · best 14.27:1#E0DA3E

#1B20A7#FFFFFF text · best 11.59:1#1B20A7

Peridot#000000 text · best 10.86:1#B4C424

Acid Green#000000 text · best 10.31:1#B0BF1A

#BCB606#000000 text · best 9.83:1#BCB606

Generated Palette

#A7A21B#A7A21B

#1B20A7#1B20A7

#A75C1B#A75C1B

#66A71B#66A71B

#E0DA3E#E0DA3E

#58550E#58550E

Color Harmonies

#1B20A7#1B20A7

#A75C1B#A75C1B

#66A71B#66A71B

#1BA7A2#1BA7A2

#A21BA7#A21BA7

Variants

#E0DA3E#E0DA3E

#58550E#58550E

#BCB606#BCB606

#918E30#918E30

#D6D36B#D6D36B

#EBE300#EBE300

Nearest Named Colors

Acid Green#B0BF1A

Dark Goldenrod#B8860B

Peridot#B4C424

Brass#B5A642

Brushed Brass#B5A642

#A7A21B

CSS

Machine-Readable HEX Data (JSON)

About #A7A21B

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides