Colors Encyclopedia

HEX atlas value

#66785E

#66785E is a cool green HEX color close to Cactus Green. According to Colors Encyclopedia, it converts to RGB 102, 120, 94, HSL 102, 12%, 42%, has luminance 0.1707, and belongs to the muted and earth tone groups.

greencoolmutedearth-tone
#66785E Sample readable text
HEX #66785E
RGB rgb(102, 120, 94)
HSL hsl(102 12% 42%)
CMYK cmyk(15, 0, 22, 53)
Luminance 0.1707
Contrast Black 4.41:1White 4.76:1

CSS

--color-66785e: #66785E;
.background-66785e { background-color: #66785E; }
.text-66785e { color: #66785E; }

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
Luminance0.1707
Black text4.41:1AA Fail
White text4.76:1AA 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
Download JSON Open API
Structured sections
Color systems
{"hex":"#66785E","rgb":[102,120,94],"hsl":[102,12,42],"cmyk":[15,0,22,53],"luminance":0.1707,"contrast":{"black":4.41,"white":4.76}}
WCAG
{"AA":["#FFFFFF"],"AAA":[]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":4.41,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":4.76,"wcagAA":true,"wcagAAA":false}]
Accessible alternatives
[{"name":"#3A4536","hex":"#3A4536","family":"green","bestTextColor":"#FFFFFF","contrastBlack":2.08,"contrastWhite":10.08,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#94A58D","hex":"#94A58D","family":"green","bestTextColor":"#000000","contrastBlack":8.03,"contrastWhite":2.62,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"#705E78","hex":"#705E78","family":"purple","bestTextColor":"#FFFFFF","contrastBlack":3.56,"contrastWhite":5.9,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":[]},{"name":"Granite","hex":"#676767","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":3.71,"contrastWhite":5.66,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":[]},{"name":"#5D9047","hex":"#5D9047","family":"green","bestTextColor":"#000000","contrastBlack":5.55,"contrastWhite":3.79,"wcagAA":["#000000","#1A1A1A"],"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"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/66785e.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/cactus-green.json","https://www.colorsencyclopedia.com/api/colors/dim-gray.json","https://www.colorsencyclopedia.com/api/colors/dim-grey.json"]}
Harmonies
{"complementary":"#705E78","analogous":["#73785E","#5E7863"],"triadic":["#5E6678","#785E66"],"tetradic":["#5E7378","#705E78","#78635E"],"splitComplementary":["#635E78","#785E73"],"monochromatic":["#94A58D","#66785E","#3A4536"]}
Variants
{"light":"#94A58D","dark":"#3A4536","saturated":"#5D9047","desaturated":"#6B6B6B","pastel":"#ABABAB","neon":"#4CFF00"}
Nearest named colors
[{"slug":"cactus-green","name":"Cactus Green","hex":"#587156","distance":17.578395831246947},{"slug":"dim-gray","name":"Dim Gray","hex":"#696969","distance":18.841443681416774},{"slug":"dim-grey","name":"Dim Grey","hex":"#696969","distance":18.841443681416774},{"slug":"granite","name":"Granite","hex":"#676767","distance":19.261360284258224},{"slug":"machinery-gray","name":"Machinery Gray","hex":"#6C6F70","distance":21}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #66785E

#66785E is classified as a cool green value with muted and earth tone visual character. #66785E is visually closest to Cactus Green, a named green color with HEX #587156.

The RGB channels are 102, 120, and 94, with green carrying the strongest channel weight. In HSL, the hue is 102deg with 12% saturation and 42% 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 0.1707, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 17.58, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text4.41:1AA Fail
White text4.76:1AA Pass

AA text options: #FFFFFF.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #66785E needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000004.41:1 · Fail
White text#FFFFFF4.76:1 · AA

Accessible Alternatives

#3A4536#FFFFFF text · best 10.08:1#3A4536
#94A58D#000000 text · best 8.03:1#94A58D
#705E78#FFFFFF text · best 5.9:1#705E78
Granite#FFFFFF text · best 5.66:1#676767
#5D9047#000000 text · best 5.55:1#5D9047

Generated Palette

#66785E#66785E
#705E78#705E78
#73785E#73785E
#5E7863#5E7863
#94A58D#94A58D
#3A4536#3A4536

Color Harmonies

#705E78#705E78
#73785E#73785E
#5E7863#5E7863
#5E6678#5E6678
#785E66#785E66

Variants

#94A58D#94A58D
#3A4536#3A4536
#5D9047#5D9047
#6B6B6B#6B6B6B
#ABABAB#ABABAB
#4CFF00#4CFF00

Nearest Named Colors

Cactus Green#587156
Dim Gray#696969
Dim Grey#696969
Granite#676767
Machinery Gray#6C6F70

Related HEX Guides

Cactus Green colorOpen the nearest named color reference for #587156.Dim Gray colorOpen the nearest named color reference for #696969.Dim Grey colorOpen the nearest named color reference for #696969.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.#66785E APIOpen the machine-readable JSON record for this HEX value.