HEX atlas value

#28C378

#28C378 is a cool green HEX color close to Medium Sea Green. According to Colors Encyclopedia, it converts to RGB 40, 195, 120, HSL 151, 66%, 46%, has luminance 0.4084, and belongs to the balanced group.

green cool balanced

#28C378 Sample readable text

HEX #28C378

RGB rgb(40, 195, 120)

HSL hsl(151 66% 46%)

CMYK cmyk(79, 0, 38, 24)

Luminance 0.4084

Contrast Black 9.17:1White 2.29:1

CSS

--color-28c378: #28C378;
.background-28c378 { background-color: #28C378; }
.text-28c378 { color: #28C378; }

Luminance0.4084

Black text9.17:1AA Pass

White text2.29:1AA 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":"#28C378","rgb":[40,195,120],"hsl":[151,66,46],"cmyk":[79,0,38,24],"luminance":0.4084,"contrast":{"black":9.17,"white":2.29}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":9.17,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":2.29,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#67E0A5","hex":"#67E0A5","family":"green","bestTextColor":"#000000","contrastBlack":12.78,"contrastWhite":1.64,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#0EDD79","hex":"#0EDD79","family":"green","bestTextColor":"#000000","contrastBlack":11.64,"contrastWhite":1.8,"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":"#28C0C3","hex":"#28C0C3","family":"cyan","bestTextColor":"#000000","contrastBlack":9.42,"contrastWhite":2.23,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#28C32A","hex":"#28C32A","family":"green","bestTextColor":"#000000","contrastBlack":8.93,"contrastWhite":2.35,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000","#1A1A1A"]}]

AI context

{"semanticGroups":["cool green","balanced","balanced green","Medium Sea Green adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","botanical and wellness palettes"],"contrastSafeWith":["#000000","#1A1A1A"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/28c378.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":"#C32873","analogous":["#28C32A","#28C0C3"],"triadic":["#7828C3","#C37828"],"tetradic":["#2A28C3","#C32873","#C0C328"],"splitComplementary":["#C328C0","#C32A28"],"monochromatic":["#67E0A5","#28C378","#187749"]}

Variants

{"light":"#67E0A5","dark":"#187749","saturated":"#0EDD79","desaturated":"#42A977","pastel":"#8FDBB6","neon":"#14FF8E"}

Nearest named colors

[{"slug":"medium-sea-green","name":"Medium Sea Green","hex":"#3CB371","distance":26.551836094703507},{"slug":"emerald","name":"Emerald","hex":"#50C878","distance":40.311288741492746},{"slug":"paris-green","name":"Paris Green","hex":"#50C878","distance":40.311288741492746},{"slug":"jade","name":"Jade","hex":"#00A86B","distance":49.9799959983992},{"slug":"light-sea-green","name":"Light Sea Green","hex":"#20B2AA","distance":53.41348144429457}]

HEX meaning and use

About #28C378

#28C378 is classified as a cool green value with balanced visual character. #28C378 is visually closest to Medium Sea Green, a named green color with HEX #3CB371.

The RGB channels are 40, 195, and 120, with green carrying the strongest channel weight. In HSL, the hue is 151deg with 66% saturation and 46% 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 0.4084, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 26.55, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text9.17:1AA Pass

White text2.29:1AA Fail

AA text options: #000000, #1A1A1A.

AAA text options: #000000, #1A1A1A.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #28C378 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000009.17:1 · AAA

White text#FFFFFF2.29:1 · Fail

Accessible Alternatives

#67E0A5#000000 text · best 12.78:1#67E0A5

#0EDD79#000000 text · best 11.64:1#0EDD79

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

#28C0C3#000000 text · best 9.42:1#28C0C3

#28C32A#000000 text · best 8.93:1#28C32A

Generated Palette

#28C378#28C378

#C32873#C32873

#28C32A#28C32A

#28C0C3#28C0C3

#67E0A5#67E0A5

#187749#187749

Color Harmonies

#C32873#C32873

#28C32A#28C32A

#28C0C3#28C0C3

#7828C3#7828C3

#C37828#C37828

Variants

#67E0A5#67E0A5

#187749#187749

#0EDD79#0EDD79

#42A977#42A977

#8FDBB6#8FDBB6

#14FF8E#14FF8E

Nearest Named Colors

Medium Sea Green#3CB371

Emerald#50C878

Paris Green#50C878

Jade#00A86B

Light Sea Green#20B2AA

#28C378

CSS

Machine-Readable HEX Data (JSON)

About #28C378

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides