HEX atlas value

#18BF4A

#18BF4A is a cool green HEX color close to Lime Green. According to Colors Encyclopedia, it converts to RGB 24, 191, 74, HSL 138, 78%, 42%, has luminance 0.3795, and belongs to the vibrant and jewel tone groups.

green cool vibrant jewel-tone

#18BF4A Sample readable text

HEX #18BF4A

RGB rgb(24, 191, 74)

HSL hsl(138 78% 42%)

CMYK cmyk(87, 0, 61, 25)

Luminance 0.3795

Contrast Black 8.59:1White 2.44:1

CSS

--color-18bf4a: #18BF4A;
.background-18bf4a { background-color: #18BF4A; }
.text-18bf4a { color: #18BF4A; }

Luminance0.3795

Black text8.59:1AA Pass

White text2.44:1AA 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":"#18BF4A","rgb":[24,191,74],"hsl":[138,78,42],"cmyk":[87,0,61,25],"luminance":0.3795,"contrast":{"black":8.59,"white":2.44}}

WCAG

{"AA":["#000000","#1A1A1A"],"AAA":["#000000","#1A1A1A"]}

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":8.59,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":2.44,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#49E979","hex":"#49E979","family":"green","bestTextColor":"#000000","contrastBlack":13.21,"contrastWhite":1.59,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#00D640","hex":"#00D640","family":"green","bestTextColor":"#000000","contrastBlack":10.69,"contrastWhite":1.96,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"Lime Green","hex":"#32CD32","family":"green","bestTextColor":"#000000","contrastBlack":9.91,"contrastWhite":2.12,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#18BF9D","hex":"#18BF9D","family":"cyan","bestTextColor":"#000000","contrastBlack":8.98,"contrastWhite":2.34,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#39BF18","hex":"#39BF18","family":"green","bestTextColor":"#000000","contrastBlack":8.64,"contrastWhite":2.43,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000","#1A1A1A"]}]

AI context

{"semanticGroups":["cool green","vibrant","jewel tone","vibrant green","jewel tone green","Lime Green adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","rich accent palettes","high-energy accents","botanical and wellness palettes"],"contrastSafeWith":["#000000","#1A1A1A"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/18bf4a.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/lime-green.json","https://www.colorsencyclopedia.com/api/colors/shamrock.json","https://www.colorsencyclopedia.com/api/colors/jade.json"]}

Harmonies

{"complementary":"#BF188D","analogous":["#39BF18","#18BF9D"],"triadic":["#4A18BF","#BF4A18"],"tetradic":["#1839BF","#BF188D","#BF9D18"],"splitComplementary":["#9D18BF","#BF1839"],"monochromatic":["#49E979","#18BF4A","#0D6D2A"]}

Variants

{"light":"#49E979","dark":"#0D6D2A","saturated":"#00D640","desaturated":"#2FA753","pastel":"#76E096","neon":"#00FF4D"}

Nearest named colors

[{"slug":"lime-green","name":"Lime Green","hex":"#32CD32","distance":38.05259518088089},{"slug":"shamrock","name":"Shamrock","hex":"#009E60","distance":46.357307945997036},{"slug":"jade","name":"Jade","hex":"#00A86B","distance":46.84015371452148},{"slug":"medium-sea-green","name":"Medium Sea Green","hex":"#3CB371","distance":54.415071441651165},{"slug":"sea-green","name":"Sea Green","hex":"#2E8B57","distance":57.9396237474839}]

HEX meaning and use

About #18BF4A

#18BF4A is classified as a cool green value with vibrant and jewel tone visual character. #18BF4A is visually closest to Lime Green, a named green color with HEX #32CD32.

The RGB channels are 24, 191, and 74, with green carrying the strongest channel weight. In HSL, the hue is 138deg with 78% saturation and 42% lightness, so this page treats it as a high-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 rich accent palettes. Its luminance is 0.3795, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 38.05, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text8.59:1AA Pass

White text2.44:1AA Fail

AA text options: #000000, #1A1A1A.

AAA text options: #000000, #1A1A1A.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #18BF4A needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000008.59:1 · AAA

White text#FFFFFF2.44:1 · Fail

Accessible Alternatives

#49E979#000000 text · best 13.21:1#49E979

#00D640#000000 text · best 10.69:1#00D640

Lime Green#000000 text · best 9.91:1#32CD32

#18BF9D#000000 text · best 8.98:1#18BF9D

#39BF18#000000 text · best 8.64:1#39BF18

Generated Palette

#18BF4A#18BF4A

#BF188D#BF188D

#39BF18#39BF18

#18BF9D#18BF9D

#49E979#49E979

#0D6D2A#0D6D2A

Color Harmonies

#BF188D#BF188D

#39BF18#39BF18

#18BF9D#18BF9D

#4A18BF#4A18BF

#BF4A18#BF4A18

Variants

#49E979#49E979

#0D6D2A#0D6D2A

#00D640#00D640

#2FA753#2FA753

#76E096#76E096

#00FF4D#00FF4D

Nearest Named Colors

Lime Green#32CD32

Shamrock#009E60

Jade#00A86B

Medium Sea Green#3CB371

Sea Green#2E8B57

#18BF4A

CSS

Machine-Readable HEX Data (JSON)

About #18BF4A

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides