HEX atlas value

#238B51

#238B51 is a cool green HEX color close to Sea Green. According to Colors Encyclopedia, it converts to RGB 35, 139, 81, HSL 147, 60%, 34%, has luminance 0.1942, and belongs to the earth tone and jewel tone groups.

green cool earth-tone jewel-tone

#238B51 Sample readable text

HEX #238B51

RGB rgb(35, 139, 81)

HSL hsl(147 60% 34%)

CMYK cmyk(75, 0, 42, 45)

Luminance 0.1942

Contrast Black 4.88:1White 4.3:1

CSS

--color-238b51: #238B51;
.background-238b51 { background-color: #238B51; }
.text-238b51 { color: #238B51; }

Luminance0.1942

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":"#238B51","rgb":[35,139,81],"hsl":[147,60,34],"cmyk":[75,0,42,45],"luminance":0.1942,"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":"#104126","hex":"#104126","family":"green","bestTextColor":"#FFFFFF","contrastBlack":1.81,"contrastWhite":11.63,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#3BCE7D","hex":"#3BCE7D","family":"green","bestTextColor":"#000000","contrastBlack":10.31,"contrastWhite":2.04,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#8B235C","hex":"#8B235C","family":"pink","bestTextColor":"#FFFFFF","contrastBlack":2.49,"contrastWhite":8.43,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Shamrock","hex":"#009E60","family":"green","bestTextColor":"#000000","contrastBlack":6.06,"contrastWhite":3.47,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":[]},{"name":"#109E50","hex":"#109E50","family":"green","bestTextColor":"#000000","contrastBlack":6.03,"contrastWhite":3.48,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":[]}]

AI context

{"semanticGroups":["cool green","earth tone","jewel tone","earth tone green","jewel tone green","Sea 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/238b51.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/sea-green.json","https://www.colorsencyclopedia.com/api/colors/traffic-green.json","https://www.colorsencyclopedia.com/api/colors/viridian.json"]}

Harmonies

{"complementary":"#8B235C","analogous":["#288B23","#238B86"],"triadic":["#51238B","#8B5123"],"tetradic":["#23288B","#8B235C","#8B8623"],"splitComplementary":["#86238B","#8B2328"],"monochromatic":["#3BCE7D","#238B51","#104126"]}

Variants

{"light":"#3BCE7D","dark":"#104126","saturated":"#109E50","desaturated":"#367853","pastel":"#67C592","neon":"#00D660"}

Nearest named colors

[{"slug":"sea-green","name":"Sea Green","hex":"#2E8B57","distance":12.529964086141668},{"slug":"traffic-green","name":"Traffic Green","hex":"#008450","distance":35.70714214271425},{"slug":"viridian","name":"Viridian","hex":"#40826D","distance":41.30375285612676},{"slug":"shamrock","name":"Shamrock","hex":"#009E60","distance":42.555845661906424},{"slug":"epoxy-green","name":"Epoxy Green","hex":"#4E8A57","distance":43.42810150121693}]

HEX meaning and use

About #238B51

#238B51 is classified as a cool green value with earth tone and jewel tone visual character. #238B51 is visually closest to Sea Green, a named green color with HEX #2E8B57.

The RGB channels are 35, 139, and 81, with green carrying the strongest channel weight. In HSL, the hue is 147deg 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 0.1942, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 12.53, 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 #238B51 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000004.88:1 · AA

White text#FFFFFF4.3:1 · Fail

Accessible Alternatives

#104126#FFFFFF text · best 11.63:1#104126

#3BCE7D#000000 text · best 10.31:1#3BCE7D

#8B235C#FFFFFF text · best 8.43:1#8B235C

Shamrock#000000 text · best 6.06:1#009E60

#109E50#000000 text · best 6.03:1#109E50

Generated Palette

#238B51#238B51

#8B235C#8B235C

#288B23#288B23

#238B86#238B86

#3BCE7D#3BCE7D

#104126#104126

Color Harmonies

#8B235C#8B235C

#288B23#288B23

#238B86#238B86

#51238B#51238B

#8B5123#8B5123

Variants

#3BCE7D#3BCE7D

#104126#104126

#109E50#109E50

#367853#367853

#67C592#67C592

#00D660#00D660

Nearest Named Colors

Sea Green#2E8B57

Traffic Green#008450

Viridian#40826D

Shamrock#009E60

Epoxy Green#4E8A57

#238B51

CSS

Machine-Readable HEX Data (JSON)

About #238B51

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides