HEX atlas value

#42BD63

#42BD63 is a cool green HEX color close to Medium Sea Green. According to Colors Encyclopedia, it converts to RGB 66, 189, 99, HSL 136, 48%, 50%, has luminance 0.3845, and belongs to the earth tone group.

green cool earth-tone

#42BD63 Sample readable text

HEX #42BD63

RGB rgb(66, 189, 99)

HSL hsl(136 48% 50%)

CMYK cmyk(65, 0, 48, 26)

Luminance 0.3845

Contrast Black 8.69:1White 2.42:1

CSS

--color-42bd63: #42BD63;
.background-42bd63 { background-color: #42BD63; }
.text-42bd63 { color: #42BD63; }

Luminance0.3845

Black text8.69:1AA Pass

White text2.42:1AA 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":"#42BD63","rgb":[66,189,99],"hsl":[136,48,50],"cmyk":[65,0,48,26],"luminance":0.3845,"contrast":{"black":8.69,"white":2.42}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":8.69,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":2.42,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#86D59B","hex":"#86D59B","family":"green","bestTextColor":"#000000","contrastBlack":12,"contrastWhite":1.75,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#26D956","hex":"#26D956","family":"green","bestTextColor":"#000000","contrastBlack":11.14,"contrastWhite":1.88,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"Paris Green","hex":"#50C878","family":"green","bestTextColor":"#000000","contrastBlack":9.87,"contrastWhite":2.13,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#42BDA0","hex":"#42BDA0","family":"cyan","bestTextColor":"#000000","contrastBlack":9.02,"contrastWhite":2.33,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#5FBD42","hex":"#5FBD42","family":"green","bestTextColor":"#000000","contrastBlack":8.84,"contrastWhite":2.37,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000","#1A1A1A"]}]

AI context

{"semanticGroups":["cool green","earth tone","earth tone green","Medium Sea Green adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","natural palettes","botanical and wellness palettes"],"contrastSafeWith":["#000000","#1A1A1A"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/42bd63.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/medium-sea-green.json","https://www.colorsencyclopedia.com/api/colors/emerald.json","https://www.colorsencyclopedia.com/api/colors/paris-green.json"]}

Harmonies

{"complementary":"#BD429C","analogous":["#5FBD42","#42BDA0"],"triadic":["#6342BD","#BD6342"],"tetradic":["#425FBD","#BD429C","#BDA042"],"splitComplementary":["#A042BD","#BD425F"],"monochromatic":["#86D59B","#42BD63","#2A793F"]}

Variants

{"light":"#86D59B","dark":"#2A793F","saturated":"#26D956","desaturated":"#5EA170","pastel":"#AAD4B5","neon":"#29FF62"}

Nearest named colors

[{"slug":"medium-sea-green","name":"Medium Sea Green","hex":"#3CB371","distance":18.2208671582886},{"slug":"emerald","name":"Emerald","hex":"#50C878","distance":27.53179979587241},{"slug":"paris-green","name":"Paris Green","hex":"#50C878","distance":27.53179979587241},{"slug":"alexandrite","name":"Alexandrite","hex":"#3D8B74","distance":53.04714883949938},{"slug":"epoxy-green","name":"Epoxy Green","hex":"#4E8A57","distance":53.749418601506754}]

HEX meaning and use

About #42BD63

#42BD63 is classified as a cool green value with earth tone visual character. #42BD63 is visually closest to Medium Sea Green, a named green color with HEX #3CB371.

The RGB channels are 66, 189, and 99, with green carrying the strongest channel weight. In HSL, the hue is 136deg with 48% 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 natural palettes. Its luminance is 0.3845, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 18.22, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text8.69:1AA Pass

White text2.42:1AA Fail

AA text options: #000000, #1A1A1A.

AAA text options: #000000, #1A1A1A.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #42BD63 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000008.69:1 · AAA

White text#FFFFFF2.42:1 · Fail

Accessible Alternatives

#86D59B#000000 text · best 12:1#86D59B

#26D956#000000 text · best 11.14:1#26D956

Paris Green#000000 text · best 9.87:1#50C878

#42BDA0#000000 text · best 9.02:1#42BDA0

#5FBD42#000000 text · best 8.84:1#5FBD42

Generated Palette

#42BD63#42BD63

#BD429C#BD429C

#5FBD42#5FBD42

#42BDA0#42BDA0

#86D59B#86D59B

#2A793F#2A793F

Color Harmonies

#BD429C#BD429C

#5FBD42#5FBD42

#42BDA0#42BDA0

#6342BD#6342BD

#BD6342#BD6342

Variants

#86D59B#86D59B

#2A793F#2A793F

#26D956#26D956

#5EA170#5EA170

#AAD4B5#AAD4B5

#29FF62#29FF62

Nearest Named Colors

Medium Sea Green#3CB371

Emerald#50C878

Paris Green#50C878

Alexandrite#3D8B74

Epoxy Green#4E8A57

#42BD63

CSS

Machine-Readable HEX Data (JSON)

About #42BD63

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides