HEX atlas value

#3FA121

#3FA121 is a cool green HEX color close to Kelly Green. According to Colors Encyclopedia, it converts to RGB 63, 161, 33, HSL 106, 66%, 38%, has luminance 0.2666, and belongs to the jewel tone group.

green cool jewel-tone

#3FA121 Sample readable text

HEX #3FA121

RGB rgb(63, 161, 33)

HSL hsl(106 66% 38%)

CMYK cmyk(61, 0, 80, 37)

Luminance 0.2666

Contrast Black 6.33:1White 3.32:1

CSS

--color-3fa121: #3FA121;
.background-3fa121 { background-color: #3FA121; }
.text-3fa121 { color: #3FA121; }

Luminance0.2666

Black text6.33:1AA Pass

White text3.32:1AA 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":"#3FA121","rgb":[63,161,33],"hsl":[106,66,38],"cmyk":[61,0,80,37],"luminance":0.2666,"contrast":{"black":6.33,"white":3.32}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":6.33,"wcagAA":true,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":3.32,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#67D945","hex":"#67D945","family":"green","bestTextColor":"#000000","contrastBlack":11.59,"contrastWhite":1.81,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#215511","hex":"#215511","family":"green","bestTextColor":"#FFFFFF","contrastBlack":2.37,"contrastWhite":8.85,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Kelly Green","hex":"#4CBB17","family":"green","bestTextColor":"#000000","contrastBlack":8.43,"contrastWhite":2.49,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"#33B60C","hex":"#33B60C","family":"green","bestTextColor":"#000000","contrastBlack":7.84,"contrastWhite":2.68,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"#8321A1","hex":"#8321A1","family":"purple","bestTextColor":"#FFFFFF","contrastBlack":2.7,"contrastWhite":7.78,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]}]

AI context

{"semanticGroups":["cool green","jewel tone","jewel tone green","Kelly Green adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","rich accent palettes","botanical and wellness palettes"],"contrastSafeWith":["#000000","#1A1A1A"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/3fa121.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/kelly-green.json","https://www.colorsencyclopedia.com/api/colors/forest-green.json","https://www.colorsencyclopedia.com/api/colors/scheeles-green.json"]}

Harmonies

{"complementary":"#8321A1","analogous":["#7FA121","#21A143"],"triadic":["#213FA1","#A1213F"],"tetradic":["#217FA1","#8321A1","#A14321"],"splitComplementary":["#4321A1","#A1217F"],"monochromatic":["#67D945","#3FA121","#215511"]}

Variants

{"light":"#67D945","dark":"#215511","saturated":"#33B60C","desaturated":"#4A8C36","pastel":"#87D171","neon":"#37EB00"}

Nearest named colors

[{"slug":"kelly-green","name":"Kelly Green","hex":"#4CBB17","distance":30.740852297878796},{"slug":"forest-green","name":"Forest Green","hex":"#228B22","distance":36.41428291206625},{"slug":"scheeles-green","name":"Scheele Green","hex":"#478800","distance":42.16633728461603},{"slug":"olive-drab","name":"Olive Drab","hex":"#6B8E23","distance":47.968739820845826},{"slug":"olive-leaf","name":"Olive Leaf","hex":"#6B8E23","distance":47.968739820845826}]

HEX meaning and use

About #3FA121

#3FA121 is classified as a cool green value with jewel tone visual character. #3FA121 is visually closest to Kelly Green, a named green color with HEX #4CBB17.

The RGB channels are 63, 161, and 33, with green carrying the strongest channel weight. In HSL, the hue is 106deg with 66% saturation and 38% 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 rich accent palettes. Its luminance is 0.2666, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 30.74, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text6.33:1AA Pass

White text3.32:1AA Fail

AA text options: #000000, #1A1A1A.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #3FA121 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000006.33:1 · AA

White text#FFFFFF3.32:1 · Fail

Accessible Alternatives

#67D945#000000 text · best 11.59:1#67D945

#215511#FFFFFF text · best 8.85:1#215511

Kelly Green#000000 text · best 8.43:1#4CBB17

#33B60C#000000 text · best 7.84:1#33B60C

#8321A1#FFFFFF text · best 7.78:1#8321A1

Generated Palette

#3FA121#3FA121

#8321A1#8321A1

#7FA121#7FA121

#21A143#21A143

#67D945#67D945

#215511#215511

Color Harmonies

#8321A1#8321A1

#7FA121#7FA121

#21A143#21A143

#213FA1#213FA1

#A1213F#A1213F

Variants

#67D945#67D945

#215511#215511

#33B60C#33B60C

#4A8C36#4A8C36

#87D171#87D171

#37EB00#37EB00

Nearest Named Colors

Kelly Green#4CBB17

Forest Green#228B22

Scheele Green#478800

Olive Drab#6B8E23

Olive Leaf#6B8E23

#3FA121

CSS

Machine-Readable HEX Data (JSON)

About #3FA121

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides