HEX atlas value

#40EE3A

#40EE3A is a cool green HEX color close to Lime Green. According to Colors Encyclopedia, it converts to RGB 64, 238, 58, HSL 118, 84%, 58%, has luminance 0.6254, and belongs to the vibrant group.

green cool vibrant

#40EE3A Sample readable text

HEX #40EE3A

RGB rgb(64, 238, 58)

HSL hsl(118 84% 58%)

CMYK cmyk(73, 0, 76, 7)

Luminance 0.6254

Contrast Black 13.51:1White 1.55:1

CSS

--color-40ee3a: #40EE3A;
.background-40ee3a { background-color: #40EE3A; }
.text-40ee3a { color: #40EE3A; }

Luminance0.6254

Black text13.51:1AA Pass

White text1.55:1AA 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":"#40EE3A","rgb":[64,238,58],"hsl":[118,84,58],"cmyk":[73,0,76,7],"luminance":0.6254,"contrast":{"black":13.51,"white":1.55}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":13.51,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":1.55,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#92F58E","hex":"#92F58E","family":"green","bestTextColor":"#000000","contrastBlack":15.67,"contrastWhite":1.34,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"Neon Green","hex":"#39FF14","family":"green","bestTextColor":"#000000","contrastBlack":15.49,"contrastWhite":1.36,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#30FF29","hex":"#30FF29","family":"green","bestTextColor":"#000000","contrastBlack":15.46,"contrastWhite":1.36,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#9AEE3A","hex":"#9AEE3A","family":"green","bestTextColor":"#000000","contrastBlack":14.66,"contrastWhite":1.43,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#3AEE8E","hex":"#3AEE8E","family":"green","bestTextColor":"#000000","contrastBlack":13.8,"contrastWhite":1.52,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]}]

AI context

{"semanticGroups":["cool green","vibrant","vibrant green","Lime Green adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-energy accents","botanical and wellness palettes"],"contrastSafeWith":["#000000","#1A1A1A","#36454F"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/40ee3a.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/lime-green.json","https://www.colorsencyclopedia.com/api/colors/toxic-green.json","https://www.colorsencyclopedia.com/api/colors/neon-green.json"]}

Harmonies

{"complementary":"#E83AEE","analogous":["#9AEE3A","#3AEE8E"],"triadic":["#3A40EE","#EE3A40"],"tetradic":["#3A9AEE","#E83AEE","#EE8E3A"],"splitComplementary":["#8E3AEE","#EE3A9A"],"monochromatic":["#92F58E","#40EE3A","#16BC10"]}

Variants

{"light":"#92F58E","dark":"#16BC10","saturated":"#30FF29","desaturated":"#56D651","pastel":"#B8F2B6","neon":"#57FF52"}

Nearest named colors

[{"slug":"lime-green","name":"Lime Green","hex":"#32CD32","distance":36.72873534441391},{"slug":"toxic-green","name":"Toxic Green","hex":"#61DE2A","distance":40.01249804748511},{"slug":"neon-green","name":"Neon Green","hex":"#39FF14","distance":42.21374183841087},{"slug":"kelly-green","name":"Kelly Green","hex":"#4CBB17","distance":63.00793600809346},{"slug":"emerald","name":"Emerald","hex":"#50C878","distance":74.45804187594514}]

HEX meaning and use

About #40EE3A

#40EE3A is classified as a cool green value with vibrant visual character. #40EE3A is visually closest to Lime Green, a named green color with HEX #32CD32.

The RGB channels are 64, 238, and 58, with green carrying the strongest channel weight. In HSL, the hue is 118deg with 84% saturation and 58% 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 high-energy accents. Its luminance is 0.6254, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 36.73, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text13.51:1AA Pass

White text1.55:1AA Fail

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

AAA text options: #000000, #1A1A1A.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #40EE3A needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#00000013.51:1 · AAA

White text#FFFFFF1.55:1 · Fail

Accessible Alternatives

#92F58E#000000 text · best 15.67:1#92F58E

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

#30FF29#000000 text · best 15.46:1#30FF29

#9AEE3A#000000 text · best 14.66:1#9AEE3A

#3AEE8E#000000 text · best 13.8:1#3AEE8E

Generated Palette

#40EE3A#40EE3A

#E83AEE#E83AEE

#9AEE3A#9AEE3A

#3AEE8E#3AEE8E

#92F58E#92F58E

#16BC10#16BC10

Color Harmonies

#E83AEE#E83AEE

#9AEE3A#9AEE3A

#3AEE8E#3AEE8E

#3A40EE#3A40EE

#EE3A40#EE3A40

Variants

#92F58E#92F58E

#16BC10#16BC10

#30FF29#30FF29

#56D651#56D651

#B8F2B6#B8F2B6

#57FF52#57FF52

Nearest Named Colors

Lime Green#32CD32

Toxic Green#61DE2A

Neon Green#39FF14

Kelly Green#4CBB17

Emerald#50C878

#40EE3A

CSS

Machine-Readable HEX Data (JSON)

About #40EE3A

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides