HEX atlas value

#637E44

#637E44 is a cool green HEX color close to Olive Green. According to Colors Encyclopedia, it converts to RGB 99, 126, 68, HSL 88, 30%, 38%, has luminance 0.1799, and belongs to the earth tone group.

green cool earth-tone

#637E44 Sample readable text

HEX #637E44

RGB rgb(99, 126, 68)

HSL hsl(88 30% 38%)

CMYK cmyk(21, 0, 46, 51)

Luminance 0.1799

Contrast Black 4.6:1White 4.57:1

CSS

--color-637e44: #637E44;
.background-637e44 { background-color: #637E44; }
.text-637e44 { color: #637E44; }

Luminance0.1799

Black text4.6:1AA Pass

White text4.57:1AA 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":"#637E44","rgb":[99,126,68],"hsl":[88,30,38],"cmyk":[21,0,46,51],"luminance":0.1799,"contrast":{"black":4.6,"white":4.57}}

WCAG

{"AA":["#000000","#FFFFFF"],"AAA":[]}

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":4.6,"wcagAA":true,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":4.57,"wcagAA":true,"wcagAAA":false}]

Accessible alternatives

[{"name":"#344224","hex":"#344224","family":"green","bestTextColor":"#FFFFFF","contrastBlack":1.95,"contrastWhite":10.77,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#91B06D","hex":"#91B06D","family":"green","bestTextColor":"#000000","contrastBlack":8.63,"contrastWhite":2.43,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#5F447E","hex":"#5F447E","family":"purple","bestTextColor":"#FFFFFF","contrastBlack":2.61,"contrastWhite":8.03,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Dark Olive Green","hex":"#556B2F","family":"green","bestTextColor":"#FFFFFF","contrastBlack":3.53,"contrastWhite":5.95,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":[]},{"name":"#64932F","hex":"#64932F","family":"green","bestTextColor":"#000000","contrastBlack":5.76,"contrastWhite":3.65,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":[]}]

AI context

{"semanticGroups":["cool green","earth tone","earth tone green","Olive Green adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","natural palettes","botanical and wellness palettes"],"contrastSafeWith":["#000000","#FFFFFF"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/637e44.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/olive-green.json","https://www.colorsencyclopedia.com/api/colors/fern-green.json","https://www.colorsencyclopedia.com/api/colors/cactus-green.json"]}

Harmonies

{"complementary":"#5F447E","analogous":["#7E7C44","#467E44"],"triadic":["#44637E","#7E4463"],"tetradic":["#447E7C","#5F447E","#7E4446"],"splitComplementary":["#44467E","#7C447E"],"monochromatic":["#91B06D","#637E44","#344224"]}

Variants

{"light":"#91B06D","dark":"#344224","saturated":"#64932F","desaturated":"#616959","pastel":"#A2AF92","neon":"#7DEB00"}

Nearest named colors

[{"slug":"olive-green","name":"Olive Green","hex":"#708238","distance":18.138357147217054},{"slug":"fern-green","name":"Fern Green","hex":"#4F7942","distance":20.71231517720798},{"slug":"cactus-green","name":"Cactus Green","hex":"#587156","distance":24.779023386727733},{"slug":"epoxy-green","name":"Epoxy Green","hex":"#4E8A57","distance":30.757112998459398},{"slug":"dark-olive-green","name":"Dark Olive Green","hex":"#556B2F","distance":31.591137997862628}]

HEX meaning and use

About #637E44

#637E44 is classified as a cool green value with earth tone visual character. #637E44 is visually closest to Olive Green, a named green color with HEX #708238.

The RGB channels are 99, 126, and 68, with green carrying the strongest channel weight. In HSL, the hue is 88deg with 30% 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 natural palettes. Its luminance is 0.1799, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 18.14, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text4.6:1AA Pass

White text4.57:1AA Pass

AA text options: #000000, #FFFFFF.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #637E44 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000004.6:1 · AA

White text#FFFFFF4.57:1 · AA

Accessible Alternatives

#344224#FFFFFF text · best 10.77:1#344224

#91B06D#000000 text · best 8.63:1#91B06D

#5F447E#FFFFFF text · best 8.03:1#5F447E

Dark Olive Green#FFFFFF text · best 5.95:1#556B2F

#64932F#000000 text · best 5.76:1#64932F

Generated Palette

#637E44#637E44

#5F447E#5F447E

#7E7C44#7E7C44

#467E44#467E44

#91B06D#91B06D

#344224#344224

Color Harmonies

#5F447E#5F447E

#7E7C44#7E7C44

#467E44#467E44

#44637E#44637E

#7E4463#7E4463

Variants

#91B06D#91B06D

#344224#344224

#64932F#64932F

#616959#616959

#A2AF92#A2AF92

#7DEB00#7DEB00

Nearest Named Colors

Olive Green#708238

Fern Green#4F7942

Cactus Green#587156

Epoxy Green#4E8A57

Dark Olive Green#556B2F

#637E44

CSS

Machine-Readable HEX Data (JSON)

About #637E44

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides