HEX atlas value

#646C42

#646C42 is a cool green HEX color close to Cactus Green. According to Colors Encyclopedia, it converts to RGB 100, 108, 66, HSL 71, 24%, 34%, has luminance 0.1383, and belongs to the muted and earth tone groups.

green cool muted earth-tone

#646C42 Sample readable text

HEX #646C42

RGB rgb(100, 108, 66)

HSL hsl(71 24% 34%)

CMYK cmyk(7, 0, 39, 58)

Luminance 0.1383

Contrast Black 3.77:1White 5.58:1

CSS

--color-646c42: #646C42;
.background-646c42 { background-color: #646C42; }
.text-646c42 { color: #646C42; }

Luminance0.1383

Black text3.77:1AA Fail

White text5.58:1AA 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":"#646C42","rgb":[100,108,66],"hsl":[71,24,34],"cmyk":[7,0,39,58],"luminance":0.1383,"contrast":{"black":3.77,"white":5.58}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":3.77,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":5.58,"wcagAA":true,"wcagAAA":false}]

Accessible alternatives

[{"name":"#2F331F","hex":"#2F331F","family":"green","bestTextColor":"#FFFFFF","contrastBlack":1.61,"contrastWhite":13.01,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#4A426C","hex":"#4A426C","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":2.29,"contrastWhite":9.19,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#97A267","hex":"#97A267","family":"green","bestTextColor":"#000000","contrastBlack":7.68,"contrastWhite":2.73,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"Umber","hex":"#635147","family":"orange","bestTextColor":"#FFFFFF","contrastBlack":2.8,"contrastWhite":7.51,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]},{"name":"#585855","hex":"#585855","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":2.94,"contrastWhite":7.14,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]}]

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/646c42.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/cactus-green.json","https://www.colorsencyclopedia.com/api/colors/dark-olive-green.json","https://www.colorsencyclopedia.com/api/colors/fern-green.json"]}

Harmonies

{"complementary":"#4A426C","analogous":["#6C5E42","#4F6C42"],"triadic":["#42646C","#6C4264"],"tetradic":["#426C5E","#4A426C","#6C424F"],"splitComplementary":["#424F6C","#5E426C"],"monochromatic":["#97A267","#646C42","#2F331F"]}

Variants

{"light":"#97A267","dark":"#2F331F","saturated":"#707F2F","desaturated":"#585855","pastel":"#9CA08D","neon":"#AFD600"}

Nearest named colors

[{"slug":"cactus-green","name":"Cactus Green","hex":"#587156","distance":23.853720883753127},{"slug":"dark-olive-green","name":"Dark Olive Green","hex":"#556B2F","distance":24.228082879171435},{"slug":"fern-green","name":"Fern Green","hex":"#4F7942","distance":24.698178070456937},{"slug":"olive-green","name":"Olive Green","hex":"#708238","distance":26.981475126464083},{"slug":"umber","name":"Umber","hex":"#635147","distance":27.477263328068172}]

HEX meaning and use

About #646C42

#646C42 is classified as a cool green value with muted and earth tone visual character. #646C42 is visually closest to Cactus Green, a named green color with HEX #587156.

The RGB channels are 100, 108, and 66, with green carrying the strongest channel weight. In HSL, the hue is 71deg with 24% saturation and 34% 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 0.1383, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 23.85, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text3.77:1AA Fail

White text5.58:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #646C42 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000003.77:1 · Fail

White text#FFFFFF5.58:1 · AA

Accessible Alternatives

#2F331F#FFFFFF text · best 13.01:1#2F331F

#4A426C#FFFFFF text · best 9.19:1#4A426C

#97A267#000000 text · best 7.68:1#97A267

Umber#FFFFFF text · best 7.51:1#635147

#585855#FFFFFF text · best 7.14:1#585855

Generated Palette

#646C42#646C42

#4A426C#4A426C

#6C5E42#6C5E42

#4F6C42#4F6C42

#97A267#97A267

#2F331F#2F331F

Color Harmonies

#4A426C#4A426C

#6C5E42#6C5E42

#4F6C42#4F6C42

#42646C#42646C

#6C4264#6C4264

Variants

#97A267#97A267

#2F331F#2F331F

#707F2F#707F2F

#585855#585855

#9CA08D#9CA08D

#AFD600#AFD600

Nearest Named Colors

Cactus Green#587156

Dark Olive Green#556B2F

Fern Green#4F7942

Olive Green#708238

Umber#635147

#646C42

CSS

Machine-Readable HEX Data (JSON)

About #646C42

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides