Colors Encyclopedia

HEX atlas value

#566831

#566831 is a cool green HEX color close to Dark Olive Green. According to Colors Encyclopedia, it converts to RGB 86, 104, 49, HSL 80, 36%, 30%, has luminance 0.121, and belongs to the earth tone group.

greencoolearth-tone
#566831 Sample readable text
HEX #566831
RGB rgb(86, 104, 49)
HSL hsl(80 36% 30%)
CMYK cmyk(17, 0, 53, 59)
Luminance 0.121
Contrast Black 3.42:1White 6.14:1

CSS

--color-566831: #566831;
.background-566831 { background-color: #566831; }
.text-566831 { color: #566831; }

Machine-readable data

Machine-Readable HEX Data (JSON)

Structured HEX color data for conversion, WCAG checks, CSS generation, automation, and AI ingestion.

AI-Ready Dataset v1.0.0
Luminance0.121
Black text3.42:1AA Fail
White text6.14:1AA 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
Download JSON Open API
Structured sections
Color systems
{"hex":"#566831","rgb":[86,104,49],"hsl":[80,36,30],"cmyk":[17,0,53,59],"luminance":0.121,"contrast":{"black":3.42,"white":6.14}}
WCAG
{"AA":["#FFFFFF","#F5F5F5"],"AAA":[]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":3.42,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":6.14,"wcagAA":true,"wcagAAA":false}]
Accessible alternatives
[{"name":"#222A14","hex":"#222A14","family":"green","bestTextColor":"#FFFFFF","contrastBlack":1.41,"contrastWhite":14.89,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#433168","hex":"#433168","family":"purple","bestTextColor":"#FFFFFF","contrastBlack":1.88,"contrastWhite":11.18,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#89A64E","hex":"#89A64E","family":"green","bestTextColor":"#000000","contrastBlack":7.63,"contrastWhite":2.75,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"#505742","hex":"#505742","family":"green","bestTextColor":"#FFFFFF","contrastBlack":2.78,"contrastWhite":7.54,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]},{"name":"Loam","hex":"#6B4F3A","family":"orange","bestTextColor":"#FFFFFF","contrastBlack":2.8,"contrastWhite":7.49,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]}]
AI context
{"semanticGroups":["cool green","earth tone","earth tone green","Dark Olive Green adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","natural palettes","botanical and wellness palettes"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/566831.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/dark-olive-green.json","https://www.colorsencyclopedia.com/api/colors/moss-deep.json","https://www.colorsencyclopedia.com/api/colors/fern-frond.json"]}
Harmonies
{"complementary":"#433168","analogous":["#685F31","#3A6831"],"triadic":["#315668","#683156"],"tetradic":["#31685F","#433168","#68313A"],"splitComplementary":["#313A68","#5F3168"],"monochromatic":["#89A64E","#566831","#222A14"]}
Variants
{"light":"#89A64E","dark":"#222A14","saturated":"#5B7920","desaturated":"#505742","pastel":"#94A474","neon":"#81C200"}
Nearest named colors
[{"slug":"dark-olive-green","name":"Dark Olive Green","hex":"#556B2F","distance":3.7416573867739413},{"slug":"moss-deep","name":"Moss Deep","hex":"#4A5D23","distance":21.470910553583888},{"slug":"fern-frond","name":"Fern Frond","hex":"#657220","distance":24.779023386727733},{"slug":"fern-green","name":"Fern Green","hex":"#4F7942","distance":25.03996805109783},{"slug":"loam","name":"Loam","hex":"#6B4F3A","distance":33.8673884437522}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #566831

#566831 is classified as a cool green value with earth tone visual character. #566831 is visually closest to Dark Olive Green, a named green color with HEX #556B2F.

The RGB channels are 86, 104, and 49, with green carrying the strongest channel weight. In HSL, the hue is 80deg with 36% saturation and 30% 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 0.121, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 3.74, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text3.42:1AA Fail
White text6.14:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #566831 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000003.42:1 · Fail
White text#FFFFFF6.14:1 · AA

Accessible Alternatives

#222A14#FFFFFF text · best 14.89:1#222A14
#433168#FFFFFF text · best 11.18:1#433168
#89A64E#000000 text · best 7.63:1#89A64E
#505742#FFFFFF text · best 7.54:1#505742
Loam#FFFFFF text · best 7.49:1#6B4F3A

Generated Palette

#566831#566831
#433168#433168
#685F31#685F31
#3A6831#3A6831
#89A64E#89A64E
#222A14#222A14

Color Harmonies

#433168#433168
#685F31#685F31
#3A6831#3A6831
#315668#315668
#683156#683156

Variants

#89A64E#89A64E
#222A14#222A14
#5B7920#5B7920
#505742#505742
#94A474#94A474
#81C200#81C200

Nearest Named Colors

Dark Olive Green#556B2F
Moss Deep#4A5D23
Fern Frond#657220
Fern Green#4F7942
Loam#6B4F3A

Related HEX Guides

Dark Olive Green colorOpen the nearest named color reference for #556B2F.Moss Deep colorOpen the nearest named color reference for #4A5D23.Fern Frond colorOpen the nearest named color reference for #657220.Green color familyBrowse named green colors related to this HEX value.Cool colorsExplore colors with similar temperature behavior.Earth Tone colorsFind colors in the earth tone group.Color palettesBrowse palette systems related to generated color combinations.Compare colorsCompare named colors near this HEX value.Accessible colorsBrowse WCAG-friendly named colors and safe text options.#566831 APIOpen the machine-readable JSON record for this HEX value.