HEX atlas value

#99A71B

#99A71B is a warm yellow HEX color close to Acid Green. According to Colors Encyclopedia, it converts to RGB 153, 167, 27, HSL 66, 72%, 38%, has luminance 0.3449, and belongs to the vibrant group.

yellow warm vibrant

#99A71B Sample readable text

HEX #99A71B

RGB rgb(153, 167, 27)

HSL hsl(66 72% 38%)

CMYK cmyk(8, 0, 84, 35)

Luminance 0.3449

Contrast Black 7.9:1White 2.66:1

CSS

--color-99a71b: #99A71B;
.background-99a71b { background-color: #99A71B; }
.text-99a71b { color: #99A71B; }

Luminance0.3449

Black text7.9:1AA Pass

White text2.66:1AA 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":"#99A71B","rgb":[153,167,27],"hsl":[66,72,38],"cmyk":[8,0,84,35],"luminance":0.3449,"contrast":{"black":7.9,"white":2.66}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":7.9,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":2.66,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#CFE03E","hex":"#CFE03E","family":"yellow","bestTextColor":"#000000","contrastBlack":14.38,"contrastWhite":1.46,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#291BA7","hex":"#291BA7","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":1.81,"contrastWhite":11.6,"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":"Acid Green","hex":"#B0BF1A","family":"yellow","bestTextColor":"#000000","contrastBlack":10.31,"contrastWhite":2.04,"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/99a71b.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":"#291BA7","analogous":["#A76F1B","#53A71B"],"triadic":["#1B99A7","#A71B99"],"tetradic":["#1BA76F","#291BA7","#A71B53"],"splitComplementary":["#1B53A7","#6F1BA7"],"monochromatic":["#CFE03E","#99A71B","#50580E"]}

Variants

{"light":"#CFE03E","dark":"#50580E","saturated":"#AABC06","desaturated":"#889130","pastel":"#CCD66B","neon":"#D3EB00"}

Nearest named colors

[{"slug":"acid-green","name":"Acid Green","hex":"#B0BF1A","distance":33.25657829663178},{"slug":"peridot","name":"Peridot","hex":"#B4C424","distance":40.63249930782009},{"slug":"yellow-green","name":"Yellow Green","hex":"#9ACD32","distance":44.429719783046124},{"slug":"brass","name":"Brass","hex":"#B5A642","distance":48.02082881417188},{"slug":"brushed-brass","name":"Brushed Brass","hex":"#B5A642","distance":48.02082881417188}]

HEX meaning and use

About #99A71B

#99A71B is classified as a warm yellow value with vibrant visual character. #99A71B is visually closest to Acid Green, a named yellow color with HEX #B0BF1A.

The RGB channels are 153, 167, and 27, with green carrying the strongest channel weight. In HSL, the hue is 66deg 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 0.3449, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 33.26, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text7.9:1AA Pass

White text2.66:1AA Fail

AA text options: #000000, #1A1A1A.

AAA text options: #000000.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #99A71B needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000007.9:1 · AAA

White text#FFFFFF2.66:1 · Fail

Accessible Alternatives

#CFE03E#000000 text · best 14.38:1#CFE03E

#291BA7#FFFFFF text · best 11.6:1#291BA7

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

Peridot#000000 text · best 10.86:1#B4C424

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

Generated Palette

#99A71B#99A71B

#291BA7#291BA7

#A76F1B#A76F1B

#53A71B#53A71B

#CFE03E#CFE03E

#50580E#50580E

Color Harmonies

#291BA7#291BA7

#A76F1B#A76F1B

#53A71B#53A71B

#1B99A7#1B99A7

#A71B99#A71B99

Variants

#CFE03E#CFE03E

#50580E#50580E

#AABC06#AABC06

#889130#889130

#CCD66B#CCD66B

#D3EB00#D3EB00

Nearest Named Colors

Acid Green#B0BF1A

Peridot#B4C424

Yellow Green#9ACD32

Brass#B5A642

Brushed Brass#B5A642

#99A71B

CSS

Machine-Readable HEX Data (JSON)

About #99A71B

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides