HEX atlas value

#15331F

#15331F is a cool green HEX color close to Slate Black. According to Colors Encyclopedia, it converts to RGB 21, 51, 31, HSL 140, 42%, 14%, has luminance 0.0263, and belongs to the dark and earth tone groups.

green cool dark earth-tone

#15331F Sample readable text

HEX #15331F

RGB rgb(21, 51, 31)

HSL hsl(140 42% 14%)

CMYK cmyk(59, 0, 39, 80)

Luminance 0.0263

Contrast Black 1.53:1White 13.76:1

CSS

--color-15331f: #15331F;
.background-15331f { background-color: #15331F; }
.text-15331f { color: #15331F; }

Luminance0.0263

Black text1.53:1AA Fail

White text13.76:1AA 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":"#15331F","rgb":[21,51,31],"hsl":[140,42,14],"cmyk":[59,0,39,80],"luminance":0.0263,"contrast":{"black":1.53,"white":13.76}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":1.53,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":13.76,"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":"Matte Black","hex":"#1A1A1A","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":1.21,"contrastWhite":17.41,"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":"#331529","hex":"#331529","family":"pink","bestTextColor":"#FFFFFF","contrastBlack":1.28,"contrastWhite":16.41,"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"]}]

AI context

{"semanticGroups":["cool green","dark","earth tone","dark green","earth tone green","Slate Black 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/15331f.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/slate-black.json","https://www.colorsencyclopedia.com/api/colors/raisin.json","https://www.colorsencyclopedia.com/api/colors/carbon-fiber.json"]}

Harmonies

{"complementary":"#331529","analogous":["#1A3315","#15332E"],"triadic":["#1F1533","#331F15"],"tetradic":["#151A33","#331529","#332E15"],"splitComplementary":["#2E1533","#33151A"],"monochromatic":["#2F7446","#15331F","#000000"]}

Variants

{"light":"#2F7446","dark":"#000000","saturated":"#0D3B1C","desaturated":"#1D2B21","pastel":"#497E5A","neon":"#007025"}

Nearest named colors

[{"slug":"slate-black","name":"Slate Black","hex":"#26282A","distance":23.043437243605826},{"slug":"raisin","name":"Raisin","hex":"#242124","distance":23.958297101421877},{"slug":"carbon-fiber","name":"Carbon Fiber","hex":"#1C1C1C","distance":24.228082879171435},{"slug":"rubber","name":"Rubber","hex":"#2A2725","distance":24.919871588754223},{"slug":"matte-black","name":"Matte Black","hex":"#1A1A1A","distance":25.98076211353316}]

HEX meaning and use

About #15331F

#15331F is classified as a cool green value with dark and earth tone visual character. #15331F is visually closest to Slate Black, a named gray color with HEX #26282A.

The RGB channels are 21, 51, and 31, with green carrying the strongest channel weight. In HSL, the hue is 140deg with 42% saturation and 14% 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 0.0263, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 23.04, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text1.53:1AA Fail

White text13.76:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: #FFFFFF, #F5F5F5.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #15331F needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000001.53:1 · Fail

White text#FFFFFF13.76:1 · AAA

Accessible Alternatives

Black#FFFFFF text · best 21:1#000000

Matte Black#FFFFFF text · best 17.41:1#1A1A1A

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

#331529#FFFFFF text · best 16.41:1#331529

Raisin#FFFFFF text · best 15.93:1#242124

Generated Palette

#15331F#15331F

#331529#331529

#1A3315#1A3315

#15332E#15332E

#2F7446#2F7446

Black#000000

Color Harmonies

#331529#331529

#1A3315#1A3315

#15332E#15332E

#1F1533#1F1533

#331F15#331F15

Variants

#2F7446#2F7446

Black#000000

#0D3B1C#0D3B1C

#1D2B21#1D2B21

#497E5A#497E5A

#007025#007025

Nearest Named Colors

Slate Black#26282A

Raisin#242124

Carbon Fiber#1C1C1C

Rubber#2A2725

Matte Black#1A1A1A

#15331F

CSS

Machine-Readable HEX Data (JSON)

About #15331F

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides