HEX atlas value

#3FD42B

#3FD42B is a cool green HEX color close to Lime Green. According to Colors Encyclopedia, it converts to RGB 63, 212, 43, HSL 113, 66%, 50%, has luminance 0.4832, and belongs to the balanced group.

green cool balanced

#3FD42B Sample readable text

HEX #3FD42B

RGB rgb(63, 212, 43)

HSL hsl(113 66% 50%)

CMYK cmyk(70, 0, 80, 17)

Luminance 0.4832

Contrast Black 10.66:1White 1.97:1

CSS

--color-3fd42b: #3FD42B;
.background-3fd42b { background-color: #3FD42B; }
.text-3fd42b { color: #3FD42B; }

Luminance0.4832

Black text10.66:1AA Pass

White text1.97:1AA 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":"#3FD42B","rgb":[63,212,43],"hsl":[113,66,50],"cmyk":[70,0,80,17],"luminance":0.4832,"contrast":{"black":10.66,"white":1.97}}

WCAG

{"AA":["#000000","#1A1A1A","#36454F"],"AAA":["#000000","#1A1A1A"]}

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":10.66,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":1.97,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"Neon Green","hex":"#39FF14","family":"green","bestTextColor":"#000000","contrastBlack":15.49,"contrastWhite":1.36,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#29F00F","hex":"#29F00F","family":"green","bestTextColor":"#000000","contrastBlack":13.57,"contrastWhite":1.55,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#84E378","hex":"#84E378","family":"green","bestTextColor":"#000000","contrastBlack":13.24,"contrastWhite":1.59,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"Toxic Green","hex":"#61DE2A","family":"green","bestTextColor":"#000000","contrastBlack":11.99,"contrastWhite":1.75,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#93D42B","hex":"#93D42B","family":"green","bestTextColor":"#000000","contrastBlack":11.69,"contrastWhite":1.8,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]}]

AI context

{"semanticGroups":["cool green","balanced","balanced green","Lime Green adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","botanical and wellness palettes"],"contrastSafeWith":["#000000","#1A1A1A","#36454F"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/3fd42b.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/lime-green.json","https://www.colorsencyclopedia.com/api/colors/kelly-green.json","https://www.colorsencyclopedia.com/api/colors/toxic-green.json"]}

Harmonies

{"complementary":"#C02BD4","analogous":["#93D42B","#2BD46C"],"triadic":["#2B3FD4","#D42B3F"],"tetradic":["#2B93D4","#C02BD4","#D46C2B"],"splitComplementary":["#6C2BD4","#D42B93"],"monochromatic":["#84E378","#3FD42B","#28871C"]}

Variants

{"light":"#84E378","dark":"#28871C","saturated":"#29F00F","desaturated":"#54B847","pastel":"#A6E09F","neon":"#42FF29"}

Nearest named colors

[{"slug":"lime-green","name":"Lime Green","hex":"#32CD32","distance":16.34013463836819},{"slug":"kelly-green","name":"Kelly Green","hex":"#4CBB17","distance":34.55430508634199},{"slug":"toxic-green","name":"Toxic Green","hex":"#61DE2A","distance":35.45419580247167},{"slug":"neon-green","name":"Neon Green","hex":"#39FF14","distance":49.13247398615299},{"slug":"medium-sea-green","name":"Medium Sea Green","hex":"#3CB371","distance":77.44675590365293}]

HEX meaning and use

About #3FD42B

#3FD42B is classified as a cool green value with balanced visual character. #3FD42B is visually closest to Lime Green, a named green color with HEX #32CD32.

The RGB channels are 63, 212, and 43, with green carrying the strongest channel weight. In HSL, the hue is 113deg with 66% saturation and 50% 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 botanical and wellness palettes. Its luminance is 0.4832, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 16.34, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text10.66:1AA Pass

White text1.97:1AA Fail

AA text options: #000000, #1A1A1A, #36454F.

AAA text options: #000000, #1A1A1A.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #3FD42B needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#00000010.66:1 · AAA

White text#FFFFFF1.97:1 · Fail

Accessible Alternatives

Neon Green#000000 text · best 15.49:1#39FF14

#29F00F#000000 text · best 13.57:1#29F00F

#84E378#000000 text · best 13.24:1#84E378

Toxic Green#000000 text · best 11.99:1#61DE2A

#93D42B#000000 text · best 11.69:1#93D42B

Generated Palette

#3FD42B#3FD42B

#C02BD4#C02BD4

#93D42B#93D42B

#2BD46C#2BD46C

#84E378#84E378

#28871C#28871C

Color Harmonies

#C02BD4#C02BD4

#93D42B#93D42B

#2BD46C#2BD46C

#2B3FD4#2B3FD4

#D42B3F#D42B3F

Variants

#84E378#84E378

#28871C#28871C

#29F00F#29F00F

#54B847#54B847

#A6E09F#A6E09F

#42FF29#42FF29

Nearest Named Colors

Lime Green#32CD32

Kelly Green#4CBB17

Toxic Green#61DE2A

Neon Green#39FF14

Medium Sea Green#3CB371

#3FD42B

CSS

Machine-Readable HEX Data (JSON)

About #3FD42B

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides