Colors Encyclopedia

HEX atlas value

#556D56

#556D56 is a cool green HEX color close to Cactus Green. According to Colors Encyclopedia, it converts to RGB 85, 109, 86, HSL 123, 12%, 38%, has luminance 0.1354, and belongs to the muted and earth tone groups.

greencoolmutedearth-tone
#556D56 Sample readable text
HEX #556D56
RGB rgb(85, 109, 86)
HSL hsl(123 12% 38%)
CMYK cmyk(22, 0, 21, 57)
Luminance 0.1354
Contrast Black 3.71:1White 5.66:1

CSS

--color-556d56: #556D56;
.background-556d56 { background-color: #556D56; }
.text-556d56 { color: #556D56; }

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
Luminance0.1354
Black text3.71:1AA Fail
White text5.66:1AA 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":"#556D56","rgb":[85,109,86],"hsl":[123,12,38],"cmyk":[22,0,21,57],"luminance":0.1354,"contrast":{"black":3.71,"white":5.66}}
WCAG
{"AA":["#FFFFFF","#F5F5F5"],"AAA":[]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":3.71,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":5.66,"wcagAA":true,"wcagAAA":false}]
Accessible alternatives
[{"name":"#2D392D","hex":"#2D392D","family":"green","bestTextColor":"#FFFFFF","contrastBlack":1.73,"contrastWhite":12.11,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#819C83","hex":"#819C83","family":"green","bestTextColor":"#000000","contrastBlack":7.02,"contrastWhite":2.99,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"#6D556B","hex":"#6D556B","family":"pink","bestTextColor":"#FFFFFF","contrastBlack":3.16,"contrastWhite":6.64,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":[]},{"name":"#616161","hex":"#616161","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":3.39,"contrastWhite":6.19,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":[]},{"name":"Storm Blue","hex":"#4F666A","family":"cyan","bestTextColor":"#FFFFFF","contrastBlack":3.44,"contrastWhite":6.1,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":[]}]
AI context
{"semanticGroups":["cool green","muted","earth tone","muted green","earth tone green","Cactus Green adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","muted interface themes","natural palettes","botanical and wellness palettes"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/556d56.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/cactus-green.json","https://www.colorsencyclopedia.com/api/colors/storm-blue.json","https://www.colorsencyclopedia.com/api/colors/fern-green.json"]}
Harmonies
{"complementary":"#6D556B","analogous":["#606D55","#556D62"],"triadic":["#56556D","#6D5655"],"tetradic":["#55606D","#6D556B","#6D6255"],"splitComplementary":["#62556D","#6D5560"],"monochromatic":["#819C83","#556D56","#2D392D"]}
Variants
{"light":"#819C83","dark":"#2D392D","saturated":"#408243","desaturated":"#616161","pastel":"#A1A1A1","neon":"#00EB0C"}
Nearest named colors
[{"slug":"cactus-green","name":"Cactus Green","hex":"#587156","distance":5},{"slug":"storm-blue","name":"Storm Blue","hex":"#4F666A","distance":22.02271554554524},{"slug":"fern-green","name":"Fern Green","hex":"#4F7942","distance":24.08318915758459},{"slug":"granite","name":"Granite","hex":"#676767","distance":25.475478405713993},{"slug":"shale","name":"Shale","hex":"#59656F","distance":26.551836094703507}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #556D56

#556D56 is classified as a cool green value with muted and earth tone visual character. #556D56 is visually closest to Cactus Green, a named green color with HEX #587156.

The RGB channels are 85, 109, and 86, with green carrying the strongest channel weight. In HSL, the hue is 123deg with 12% saturation and 38% lightness, so this page treats it as a low-saturation, mid-lightness 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 muted interface themes. Its luminance is 0.1354, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 5.00, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text3.71:1AA Fail
White text5.66:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #556D56 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000003.71:1 · Fail
White text#FFFFFF5.66:1 · AA

Accessible Alternatives

#2D392D#FFFFFF text · best 12.11:1#2D392D
#819C83#000000 text · best 7.02:1#819C83
#6D556B#FFFFFF text · best 6.64:1#6D556B
#616161#FFFFFF text · best 6.19:1#616161
Storm Blue#FFFFFF text · best 6.1:1#4F666A

Generated Palette

#556D56#556D56
#6D556B#6D556B
#606D55#606D55
#556D62#556D62
#819C83#819C83
#2D392D#2D392D

Color Harmonies

#6D556B#6D556B
#606D55#606D55
#556D62#556D62
#56556D#56556D
#6D5655#6D5655

Variants

#819C83#819C83
#2D392D#2D392D
#408243#408243
#616161#616161
#A1A1A1#A1A1A1
#00EB0C#00EB0C

Nearest Named Colors

Cactus Green#587156
Storm Blue#4F666A
Fern Green#4F7942
Granite#676767
Shale#59656F

Related HEX Guides

Cactus Green colorOpen the nearest named color reference for #587156.Storm Blue colorOpen the nearest named color reference for #4F666A.Fern Green colorOpen the nearest named color reference for #4F7942.Green color familyBrowse named green colors related to this HEX value.Cool colorsExplore colors with similar temperature behavior.Muted colorsFind colors in the muted group.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.#556D56 APIOpen the machine-readable JSON record for this HEX value.