HEX atlas value

#212C1B

#212C1B is a cool green HEX color close to Rubber. According to Colors Encyclopedia, it converts to RGB 33, 44, 27, HSL 99, 24%, 14%, has luminance 0.022, and belongs to the dark and earth tone groups.

green cool dark earth-tone

#212C1B Sample readable text

HEX #212C1B

RGB rgb(33, 44, 27)

HSL hsl(99 24% 14%)

CMYK cmyk(25, 0, 39, 83)

Luminance 0.022

Contrast Black 1.44:1White 14.58:1

CSS

--color-212c1b: #212C1B;
.background-212c1b { background-color: #212C1B; }
.text-212c1b { color: #212C1B; }

Luminance0.022

Black text1.44:1AA Fail

White text14.58:1AA 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":"#212C1B","rgb":[33,44,27],"hsl":[99,24,14],"cmyk":[25,0,39,83],"luminance":0.022,"contrast":{"black":1.44,"white":14.58}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":1.44,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":14.58,"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":"Carbon Fiber","hex":"#1C1C1C","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":1.23,"contrastWhite":17.05,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#261B2C","hex":"#261B2C","family":"purple","bestTextColor":"#FFFFFF","contrastBlack":1.28,"contrastWhite":16.46,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Raisin","hex":"#242124","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":1.32,"contrastWhite":15.93,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#232423","hex":"#232423","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":1.35,"contrastWhite":15.58,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]}]

AI context

{"semanticGroups":["cool green","dark","earth tone","dark green","earth tone green","Rubber 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/212c1b.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/rubber.json","https://www.colorsencyclopedia.com/api/colors/raisin.json","https://www.colorsencyclopedia.com/api/colors/slate-black.json"]}

Harmonies

{"complementary":"#261B2C","analogous":["#2A2C1B","#1B2C1E"],"triadic":["#1B212C","#2C1B21"],"tetradic":["#1B2A2C","#261B2C","#2C1E1B"],"splitComplementary":["#1E1B2C","#2C1B2A"],"monochromatic":["#4C653E","#212C1B","#000000"]}

Variants

{"light":"#4C653E","dark":"#000000","saturated":"#1F3413","desaturated":"#232423","pastel":"#616C5A","neon":"#277000"}

Nearest named colors

[{"slug":"rubber","name":"Rubber","hex":"#2A2725","distance":14.352700094407323},{"slug":"raisin","name":"Raisin","hex":"#242124","distance":14.52583904633395},{"slug":"slate-black","name":"Slate Black","hex":"#26282A","distance":16.30950643030009},{"slug":"carbon-fiber","name":"Carbon Fiber","hex":"#1C1C1C","distance":16.792855623746664},{"slug":"asphalt","name":"Asphalt","hex":"#2B2B2B","distance":18.894443627691185}]

HEX meaning and use

About #212C1B

#212C1B is classified as a cool green value with dark and earth tone visual character. #212C1B is visually closest to Rubber, a named gray color with HEX #2A2725.

The RGB channels are 33, 44, and 27, with green carrying the strongest channel weight. In HSL, the hue is 99deg with 24% saturation and 14% lightness, so this page treats it as a low-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 0.022, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 14.35, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text1.44:1AA Fail

White text14.58:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: #FFFFFF, #F5F5F5.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #212C1B needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000001.44:1 · Fail

White text#FFFFFF14.58:1 · AAA

Accessible Alternatives

Black#FFFFFF text · best 21:1#000000

Carbon Fiber#FFFFFF text · best 17.05:1#1C1C1C

#261B2C#FFFFFF text · best 16.46:1#261B2C

Raisin#FFFFFF text · best 15.93:1#242124

#232423#FFFFFF text · best 15.58:1#232423

Generated Palette

#212C1B#212C1B

#261B2C#261B2C

#2A2C1B#2A2C1B

#1B2C1E#1B2C1E

#4C653E#4C653E

Black#000000

Color Harmonies

#261B2C#261B2C

#2A2C1B#2A2C1B

#1B2C1E#1B2C1E

#1B212C#1B212C

#2C1B21#2C1B21

Variants

#4C653E#4C653E

Black#000000

#1F3413#1F3413

#232423#232423

#616C5A#616C5A

#277000#277000

Nearest Named Colors

Rubber#2A2725

Raisin#242124

Slate Black#26282A

Carbon Fiber#1C1C1C

Asphalt#2B2B2B

#212C1B

CSS

Machine-Readable HEX Data (JSON)

About #212C1B

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides