Colors Encyclopedia

HEX atlas value

#556B2F

#556B2F is a cool green HEX color nearest Dark Olive Green. RGB 85, 107, 47, HSL 82° 39% 30%, luminance 0.1265; view contrast and conversions.

greencoolearth-tone
#556B2F Sample readable text
HEX #556B2F
RGB rgb(85, 107, 47)
HSL hsl(82 39% 30%)
CMYK cmyk(21, 0, 56, 58)
Luminance 0.1265
Contrast Black 3.53:1White 5.95:1

CSS

--color-556b2f: #556B2F;
.background-556b2f { background-color: #556B2F; }
.text-556b2f { color: #556B2F; }

HEX meaning and use

About #556B2F

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

The RGB channels are 85, 107, and 47, with green carrying the strongest channel weight. In HSL, the hue is 82deg with 39% saturation and 30% lightness, so this page treats it as a moderate-saturation, dark atlas color rather than a generic swatch.

Practical uses for this HEX value include color conversion, WCAG contrast checks, CSS color tokens, and natural palettes. Its luminance is 0.1265, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 0.00, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text3.53:1AA Fail
White text5.95:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #556B2F needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000003.53:1 · Fail
White text#FFFFFF5.95:1 · AA

Accessible Alternatives

#222B13#222B13 · #FFFFFF text · best 14.77:1#452F6A#452F6A · #FFFFFF text · best 11.24:1#87AA4B#87AA4B · #000000 text · best 7.88:1Hunter Green#355E3B · #FFFFFF text · best 7.46:1#505A3F#505A3F · #FFFFFF text · best 7.3:1

Generated Palette

Dark Olive Green#556B2F
#452F6A#452F6A
#6A622F#6A622F
#376A2F#376A2F
#87AA4B#87AA4B
#222B13#222B13

Color Harmonies

#452F6A#452F6A
#6A622F#6A622F
#376A2F#376A2F
#2F546A#2F546A
#6A2F54#6A2F54

Variants

#87AA4B#87AA4B
#222B13#222B13
#597B1E#597B1E
#505A3F#505A3F
#94A871#94A871
#7BC200#7BC200

Nearest Named Colors

Dark Olive Green#556B2F
Moss Deep#4A5D23
Fern Frond#657220
Fern Green#4F7942
Hunter Green#355E3B

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
Luminance0.1265
Black text3.53:1AA Fail
White text5.95:1AA 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":"#556B2F","rgb":[85,107,47],"hsl":[82,39,30],"cmyk":[21,0,56,58],"luminance":0.1265,"contrast":{"black":3.53,"white":5.95}}
WCAG
{"AA":["#FFFFFF","#F5F5F5"],"AAA":[]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":3.53,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":5.95,"wcagAA":true,"wcagAAA":false}]
Accessible alternatives
[{"name":"#222B13","hex":"#222B13","family":"green","bestTextColor":"#FFFFFF","contrastBlack":1.42,"contrastWhite":14.77,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#452F6A","hex":"#452F6A","family":"purple","bestTextColor":"#FFFFFF","contrastBlack":1.87,"contrastWhite":11.24,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#87AA4B","hex":"#87AA4B","family":"green","bestTextColor":"#000000","contrastBlack":7.88,"contrastWhite":2.66,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"Hunter Green","hex":"#355E3B","family":"green","bestTextColor":"#FFFFFF","contrastBlack":2.82,"contrastWhite":7.46,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]},{"name":"#505A3F","hex":"#505A3F","family":"green","bestTextColor":"#FFFFFF","contrastBlack":2.88,"contrastWhite":7.3,"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/556b2f.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":"#452F6A","analogous":["#6A622F","#376A2F"],"triadic":["#2F546A","#6A2F54"],"tetradic":["#2F6A62","#452F6A","#6A2F37"],"splitComplementary":["#2F376A","#622F6A"],"monochromatic":["#87AA4B","#556B2F","#222B13"]}
Variants
{"light":"#87AA4B","dark":"#222B13","saturated":"#597B1E","desaturated":"#505A3F","pastel":"#94A871","neon":"#7BC200"}
Nearest named colors
[{"slug":"dark-olive-green","name":"Dark Olive Green","hex":"#556B2F","distance":0},{"slug":"moss-deep","name":"Moss Deep","hex":"#4A5D23","distance":21.470910553583888},{"slug":"fern-frond","name":"Fern Frond","hex":"#657220","distance":23.021728866442675},{"slug":"fern-green","name":"Fern Green","hex":"#4F7942","distance":24.351591323771842},{"slug":"hunter-green","name":"Hunter Green","hex":"#355E3B","distance":36.565010597564445}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

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.#556B2F APIOpen the machine-readable JSON record for this HEX value.