HEX atlas value

#1B4123

#1B4123 is a cool green HEX color close to British Racing Green. According to Colors Encyclopedia, it converts to RGB 27, 65, 35, HSL 133, 41%, 18%, has luminance 0.0413, and belongs to the dark and earth tone groups.

green cool dark earth-tone

#1B4123 Sample readable text

HEX #1B4123

RGB rgb(27, 65, 35)

HSL hsl(133 41% 18%)

CMYK cmyk(58, 0, 46, 75)

Luminance 0.0413

Contrast Black 1.83:1White 11.5:1

CSS

--color-1b4123: #1B4123;
.background-1b4123 { background-color: #1B4123; }
.text-1b4123 { color: #1B4123; }

Luminance0.0413

Black text1.83:1AA Fail

White text11.5:1AA 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":"#1B4123","rgb":[27,65,35],"hsl":[133,41,18],"cmyk":[58,0,46,75],"luminance":0.0413,"contrast":{"black":1.83,"white":11.5}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":1.83,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":11.5,"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":"Slate Black","hex":"#26282A","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":1.42,"contrastWhite":14.79,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#411B39","hex":"#411B39","family":"pink","bestTextColor":"#FFFFFF","contrastBlack":1.44,"contrastWhite":14.58,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Asphalt","hex":"#2B2B2B","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":1.48,"contrastWhite":14.15,"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"]}]

AI context

{"semanticGroups":["cool green","dark","earth tone","dark green","earth tone green","British Racing Green adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","natural palettes","dark theme accents","botanical and wellness palettes"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/1b4123.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/british-racing-green.json","https://www.colorsencyclopedia.com/api/colors/charcoal-blue.json","https://www.colorsencyclopedia.com/api/colors/slate-black.json"]}

Harmonies

{"complementary":"#411B39","analogous":["#26411B","#1B4136"],"triadic":["#231B41","#41231B"],"tetradic":["#1B2641","#411B39","#41361B"],"splitComplementary":["#361B41","#411B26"],"monochromatic":["#368146","#1B4123","#000000"]}

Variants

{"light":"#368146","dark":"#000000","saturated":"#114B1E","desaturated":"#253729","pastel":"#518A5D","neon":"#00851D"}

Nearest named colors

[{"slug":"british-racing-green","name":"British Racing Green","hex":"#004225","distance":27.09243436828813},{"slug":"charcoal-blue","name":"Charcoal Blue","hex":"#263238","distance":28.053520278211074},{"slug":"slate-black","name":"Slate Black","hex":"#26282A","distance":28.19574435974337},{"slug":"asphalt","name":"Asphalt","hex":"#2B2B2B","distance":28.35489375751565},{"slug":"gunmetal","name":"Gunmetal","hex":"#2A3439","distance":29.631064780058107}]

HEX meaning and use

About #1B4123

#1B4123 is classified as a cool green value with dark and earth tone visual character. #1B4123 is visually closest to British Racing Green, a named green color with HEX #004225.

The RGB channels are 27, 65, and 35, with green carrying the strongest channel weight. In HSL, the hue is 133deg with 41% saturation and 18% lightness, so this page treats it as a moderate-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 natural palettes. Its luminance is 0.0413, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 27.09, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text1.83:1AA Fail

White text11.5:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: #FFFFFF, #F5F5F5.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #1B4123 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000001.83:1 · Fail

White text#FFFFFF11.5:1 · AAA

Accessible Alternatives

Black#FFFFFF text · best 21:1#000000

Slate Black#FFFFFF text · best 14.79:1#26282A

#411B39#FFFFFF text · best 14.58:1#411B39

Asphalt#FFFFFF text · best 14.15:1#2B2B2B

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

Generated Palette

#1B4123#1B4123

#411B39#411B39

#26411B#26411B

#1B4136#1B4136

#368146#368146

Black#000000

Color Harmonies

#411B39#411B39

#26411B#26411B

#1B4136#1B4136

#231B41#231B41

#41231B#41231B

Variants

#368146#368146

Black#000000

#114B1E#114B1E

#253729#253729

#518A5D#518A5D

#00851D#00851D

Nearest Named Colors

British Racing Green#004225

Charcoal Blue#263238

Slate Black#26282A

Asphalt#2B2B2B

Gunmetal#2A3439

#1B4123

CSS

Machine-Readable HEX Data (JSON)

About #1B4123

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides