HEX atlas value

#378B23

#378B23 is a cool green HEX color close to Forest Green. According to Colors Encyclopedia, it converts to RGB 55, 139, 35, HSL 108, 60%, 34%, has luminance 0.194, and belongs to the earth tone and jewel tone groups.

green cool earth-tone jewel-tone

#378B23 Sample readable text

HEX #378B23

RGB rgb(55, 139, 35)

HSL hsl(108 60% 34%)

CMYK cmyk(60, 0, 75, 45)

Luminance 0.194

Contrast Black 4.88:1White 4.3:1

CSS

--color-378b23: #378B23;
.background-378b23 { background-color: #378B23; }
.text-378b23 { color: #378B23; }

Luminance0.194

Black text4.88:1AA Pass

White text4.3:1AA 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":"#378B23","rgb":[55,139,35],"hsl":[108,60,34],"cmyk":[60,0,75,45],"luminance":0.194,"contrast":{"black":4.88,"white":4.3}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":4.88,"wcagAA":true,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":4.3,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#1A4110","hex":"#1A4110","family":"green","bestTextColor":"#FFFFFF","contrastBlack":1.81,"contrastWhite":11.62,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#59CE3B","hex":"#59CE3B","family":"green","bestTextColor":"#000000","contrastBlack":10.32,"contrastWhite":2.04,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#76238B","hex":"#76238B","family":"purple","bestTextColor":"#FFFFFF","contrastBlack":2.38,"contrastWhite":8.81,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#2C9E10","hex":"#2C9E10","family":"green","bestTextColor":"#000000","contrastBlack":6.01,"contrastWhite":3.5,"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","Forest Green 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/378b23.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/forest-green.json","https://www.colorsencyclopedia.com/api/colors/scheeles-green.json","https://www.colorsencyclopedia.com/api/colors/fern-green.json"]}

Harmonies

{"complementary":"#76238B","analogous":["#6C8B23","#238B42"],"triadic":["#23378B","#8B2337"],"tetradic":["#236C8B","#76238B","#8B4223"],"splitComplementary":["#42238B","#8B236C"],"monochromatic":["#59CE3B","#378B23","#1A4110"]}

Variants

{"light":"#59CE3B","dark":"#1A4110","saturated":"#2C9E10","desaturated":"#437836","pastel":"#7AC567","neon":"#2BD600"}

Nearest named colors

[{"slug":"forest-green","name":"Forest Green","hex":"#228B22","distance":21.02379604162864},{"slug":"scheeles-green","name":"Scheele Green","hex":"#478800","distance":38.600518131237564},{"slug":"fern-green","name":"Fern Green","hex":"#4F7942","distance":43.139309220245984},{"slug":"avocado","name":"Avocado","hex":"#568203","distance":45.45327270945405},{"slug":"dark-olive-green","name":"Dark Olive Green","hex":"#556B2F","distance":45.47526800360829}]

HEX meaning and use

About #378B23

#378B23 is classified as a cool green value with earth tone and jewel tone visual character. #378B23 is visually closest to Forest Green, a named green color with HEX #228B22.

The RGB channels are 55, 139, and 35, with green carrying the strongest channel weight. In HSL, the hue is 108deg with 60% 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 0.194, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 21.02, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text4.88:1AA Pass

White text4.3:1AA Fail

AA text options: #000000.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #378B23 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000004.88:1 · AA

White text#FFFFFF4.3:1 · Fail

Accessible Alternatives

#1A4110#FFFFFF text · best 11.62:1#1A4110

#59CE3B#000000 text · best 10.32:1#59CE3B

#76238B#FFFFFF text · best 8.81:1#76238B

#2C9E10#000000 text · best 6.01:1#2C9E10

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

Generated Palette

#378B23#378B23

#76238B#76238B

#6C8B23#6C8B23

#238B42#238B42

#59CE3B#59CE3B

#1A4110#1A4110

Color Harmonies

#76238B#76238B

#6C8B23#6C8B23

#238B42#238B42

#23378B#23378B

#8B2337#8B2337

Variants

#59CE3B#59CE3B

#1A4110#1A4110

#2C9E10#2C9E10

#437836#437836

#7AC567#7AC567

#2BD600#2BD600

Nearest Named Colors

Forest Green#228B22

Scheele Green#478800

Fern Green#4F7942

Avocado#568203

Dark Olive Green#556B2F

#378B23

CSS

Machine-Readable HEX Data (JSON)

About #378B23

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides