HEX atlas value

#638628

#638628 is a cool green HEX color close to Olive Drab. According to Colors Encyclopedia, it converts to RGB 99, 134, 40, HSL 82, 54%, 34%, has luminance 0.1986, and belongs to the earth tone and jewel tone groups.

green cool earth-tone jewel-tone

#638628 Sample readable text

HEX #638628

RGB rgb(99, 134, 40)

HSL hsl(82 54% 34%)

CMYK cmyk(26, 0, 70, 47)

Luminance 0.1986

Contrast Black 4.97:1White 4.22:1

CSS

--color-638628: #638628;
.background-638628 { background-color: #638628; }
.text-638628 { color: #638628; }

Luminance0.1986

Black text4.97:1AA Pass

White text4.22:1AA Fail

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":"#638628","rgb":[99,134,40],"hsl":[82,54,34],"cmyk":[26,0,70,47],"luminance":0.1986,"contrast":{"black":4.97,"white":4.22}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":4.97,"wcagAA":true,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":4.22,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#2F3F13","hex":"#2F3F13","family":"green","bestTextColor":"#FFFFFF","contrastBlack":1.84,"contrastWhite":11.4,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#4A2886","hex":"#4A2886","family":"purple","bestTextColor":"#FFFFFF","contrastBlack":1.94,"contrastWhite":10.84,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#96C743","hex":"#96C743","family":"green","bestTextColor":"#000000","contrastBlack":10.55,"contrastWhite":1.99,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#689915","hex":"#689915","family":"green","bestTextColor":"#000000","contrastBlack":6.16,"contrastWhite":3.41,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":[]},{"name":"Dark Olive Green","hex":"#556B2F","family":"green","bestTextColor":"#FFFFFF","contrastBlack":3.53,"contrastWhite":5.95,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":[]}]

AI context

{"semanticGroups":["cool green","earth tone","jewel tone","earth tone green","jewel tone green","Olive Drab adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","natural palettes","rich accent palettes","botanical and wellness palettes"],"contrastSafeWith":["#000000"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/638628.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/olive-drab.json","https://www.colorsencyclopedia.com/api/colors/olive-leaf.json","https://www.colorsencyclopedia.com/api/colors/olive-green.json"]}

Harmonies

{"complementary":"#4A2886","analogous":["#867928","#348628"],"triadic":["#286386","#862863"],"tetradic":["#288679","#4A2886","#862834"],"splitComplementary":["#283486","#792886"],"monochromatic":["#96C743","#638628","#2F3F13"]}

Variants

{"light":"#96C743","dark":"#2F3F13","saturated":"#689915","desaturated":"#5E723B","pastel":"#A1BF6E","neon":"#88D600"}

Nearest named colors

[{"slug":"olive-drab","name":"Olive Drab","hex":"#6B8E23","distance":12.36931687685298},{"slug":"olive-leaf","name":"Olive Leaf","hex":"#6B8E23","distance":12.36931687685298},{"slug":"olive-green","name":"Olive Green","hex":"#708238","distance":21},{"slug":"fern-frond","name":"Fern Frond","hex":"#657220","distance":21.633307652783937},{"slug":"dark-olive-green","name":"Dark Olive Green","hex":"#556B2F","distance":31.20897306865447}]

HEX meaning and use

About #638628

#638628 is classified as a cool green value with earth tone and jewel tone visual character. #638628 is visually closest to Olive Drab, a named green color with HEX #6B8E23.

The RGB channels are 99, 134, and 40, with green carrying the strongest channel weight. In HSL, the hue is 82deg with 54% saturation and 34% lightness, so this page treats it as a moderate-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 0.1986, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 12.37, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text4.97:1AA Pass

White text4.22:1AA Fail

AA text options: #000000.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #638628 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000004.97:1 · AA

White text#FFFFFF4.22:1 · Fail

Accessible Alternatives

#2F3F13#FFFFFF text · best 11.4:1#2F3F13

#4A2886#FFFFFF text · best 10.84:1#4A2886

#96C743#000000 text · best 10.55:1#96C743

#689915#000000 text · best 6.16:1#689915

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

Generated Palette

#638628#638628

#4A2886#4A2886

#867928#867928

#348628#348628

#96C743#96C743

#2F3F13#2F3F13

Color Harmonies

#4A2886#4A2886

#867928#867928

#348628#348628

#286386#286386

#862863#862863

Variants

#96C743#96C743

#2F3F13#2F3F13

#689915#689915

#5E723B#5E723B

#A1BF6E#A1BF6E

#88D600#88D600

Nearest Named Colors

Olive Drab#6B8E23

Olive Leaf#6B8E23

Olive Green#708238

Fern Frond#657220

Dark Olive Green#556B2F

#638628

CSS

Machine-Readable HEX Data (JSON)

About #638628

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides