HEX atlas value

#0A521D

#0A521D is a cool green HEX color close to British Racing Green. According to Colors Encyclopedia, it converts to RGB 10, 82, 29, HSL 136, 78%, 18%, has luminance 0.0619, and belongs to the dark and jewel tone groups.

green cool dark jewel-tone

#0A521D Sample readable text

HEX #0A521D

RGB rgb(10, 82, 29)

HSL hsl(136 78% 18%)

CMYK cmyk(88, 0, 65, 68)

Luminance 0.0619

Contrast Black 2.24:1White 9.38:1

CSS

--color-0a521d: #0A521D;
.background-0a521d { background-color: #0A521D; }
.text-0a521d { color: #0A521D; }

Luminance0.0619

Black text2.24:1AA Fail

White text9.38:1AA Pass

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":"#0A521D","rgb":[10,82,29],"hsl":[136,78,18],"cmyk":[88,0,65,68],"luminance":0.0619,"contrast":{"black":2.24,"white":9.38}}

WCAG

{"AA":["#FFFFFF","#F5F5F5"],"AAA":["#FFFFFF","#F5F5F5"]}

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":2.24,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":9.38,"wcagAA":true,"wcagAAA":true}]

Accessible alternatives

[{"name":"Black","hex":"#000000","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":1,"contrastWhite":21,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#520A3F","hex":"#520A3F","family":"pink","bestTextColor":"#FFFFFF","contrastBlack":1.47,"contrastWhite":14.25,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Charcoal Blue","hex":"#263238","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":1.6,"contrastWhite":13.16,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"British Racing Green","hex":"#004225","family":"green","bestTextColor":"#FFFFFF","contrastBlack":1.81,"contrastWhite":11.63,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#144822","hex":"#144822","family":"green","bestTextColor":"#FFFFFF","contrastBlack":1.98,"contrastWhite":10.61,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]}]

AI context

{"semanticGroups":["cool green","dark","jewel tone","dark green","jewel tone green","British Racing Green adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","rich accent palettes","dark theme accents","botanical and wellness palettes"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/0a521d.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/british-racing-green.json","https://www.colorsencyclopedia.com/api/colors/emerald-dark.json","https://www.colorsencyclopedia.com/api/colors/dark-green.json"]}

Harmonies

{"complementary":"#520A3F","analogous":["#1B520A","#0A5241"],"triadic":["#1D0A52","#521D0A"],"tetradic":["#0A1B52","#520A3F","#52410A"],"splitComplementary":["#410A52","#520A1B"],"monochromatic":["#14A33A","#0A521D","#000000"]}

Variants

{"light":"#14A33A","dark":"#000000","saturated":"#005C18","desaturated":"#144822","pastel":"#29B34D","neon":"#008523"}

Nearest named colors

[{"slug":"british-racing-green","name":"British Racing Green","hex":"#004225","distance":20.493901531919196},{"slug":"emerald-dark","name":"Emerald Dark","hex":"#046307","distance":28.442925306655784},{"slug":"dark-green","name":"Dark Green","hex":"#006400","distance":35.566838487557476},{"slug":"terre-verte","name":"Terre Verte","hex":"#385E0F","distance":49.558046773455466},{"slug":"charcoal-blue","name":"Charcoal Blue","hex":"#263238","distance":50.368641037852115}]

HEX meaning and use

About #0A521D

#0A521D is classified as a cool green value with dark and jewel tone visual character. #0A521D is visually closest to British Racing Green, a named green color with HEX #004225.

The RGB channels are 10, 82, and 29, with green carrying the strongest channel weight. In HSL, the hue is 136deg with 78% saturation and 18% lightness, so this page treats it as a high-saturation, dark 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 rich accent palettes. Its luminance is 0.0619, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 20.49, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text2.24:1AA Fail

White text9.38:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: #FFFFFF, #F5F5F5.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #0A521D needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000002.24:1 · Fail

White text#FFFFFF9.38:1 · AAA

Accessible Alternatives

Black#FFFFFF text · best 21:1#000000

#520A3F#FFFFFF text · best 14.25:1#520A3F

Charcoal Blue#FFFFFF text · best 13.16:1#263238

British Racing Green#FFFFFF text · best 11.63:1#004225

#144822#FFFFFF text · best 10.61:1#144822

Generated Palette

#0A521D#0A521D

#520A3F#520A3F

#1B520A#1B520A

#0A5241#0A5241

#14A33A#14A33A

Black#000000

Color Harmonies

#520A3F#520A3F

#1B520A#1B520A

#0A5241#0A5241

#1D0A52#1D0A52

#521D0A#521D0A

Variants

#14A33A#14A33A

Black#000000

#005C18#005C18

#144822#144822

#29B34D#29B34D

#008523#008523

Nearest Named Colors

British Racing Green#004225

Emerald Dark#046307

Dark Green#006400

Terre Verte#385E0F

Charcoal Blue#263238

#0A521D

CSS

Machine-Readable HEX Data (JSON)

About #0A521D

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides