HEX atlas value

#40901D

#40901D is a cool green HEX color close to Forest Green. According to Colors Encyclopedia, it converts to RGB 64, 144, 29, HSL 102, 66%, 34%, has luminance 0.2113, and belongs to the jewel tone group.

green cool jewel-tone

#40901D Sample readable text

HEX #40901D

RGB rgb(64, 144, 29)

HSL hsl(102 66% 34%)

CMYK cmyk(56, 0, 80, 44)

Luminance 0.2113

Contrast Black 5.23:1White 4.02:1

CSS

--color-40901d: #40901D;
.background-40901d { background-color: #40901D; }
.text-40901d { color: #40901D; }

Luminance0.2113

Black text5.23:1AA Pass

White text4.02:1AA 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":"#40901D","rgb":[64,144,29],"hsl":[102,66,34],"cmyk":[56,0,80,44],"luminance":0.2113,"contrast":{"black":5.23,"white":4.02}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":5.23,"wcagAA":true,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":4.02,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#1E440E","hex":"#1E440E","family":"green","bestTextColor":"#FFFFFF","contrastBlack":1.89,"contrastWhite":11.12,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#64D534","hex":"#64D534","family":"green","bestTextColor":"#000000","contrastBlack":11.11,"contrastWhite":1.89,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#6E1D90","hex":"#6E1D90","family":"purple","bestTextColor":"#FFFFFF","contrastBlack":2.24,"contrastWhite":9.37,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#38A30A","hex":"#38A30A","family":"green","bestTextColor":"#000000","contrastBlack":6.41,"contrastWhite":3.28,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":[]},{"name":"#79901D","hex":"#79901D","family":"green","bestTextColor":"#000000","contrastBlack":5.82,"contrastWhite":3.61,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":[]}]

AI context

{"semanticGroups":["cool green","jewel tone","jewel tone green","Forest Green adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","rich accent palettes","botanical and wellness palettes"],"contrastSafeWith":["#000000"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/40901d.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/forest-green.json","https://www.colorsencyclopedia.com/api/colors/scheeles-green.json","https://www.colorsencyclopedia.com/api/colors/avocado.json"]}

Harmonies

{"complementary":"#6E1D90","analogous":["#79901D","#1D9034"],"triadic":["#1D4090","#901D40"],"tetradic":["#1D7990","#6E1D90","#90341D"],"splitComplementary":["#341D90","#901D79"],"monochromatic":["#64D534","#40901D","#1E440E"]}

Variants

{"light":"#64D534","dark":"#1E440E","saturated":"#38A30A","desaturated":"#477D31","pastel":"#81CC61","neon":"#40D600"}

Nearest named colors

[{"slug":"forest-green","name":"Forest Green","hex":"#228B22","distance":30.822070014844883},{"slug":"scheeles-green","name":"Scheele Green","hex":"#478800","distance":30.886890422961002},{"slug":"avocado","name":"Avocado","hex":"#568203","distance":36.823905279043935},{"slug":"olive-drab","name":"Olive Drab","hex":"#6B8E23","distance":43.46262762420146},{"slug":"olive-leaf","name":"Olive Leaf","hex":"#6B8E23","distance":43.46262762420146}]

HEX meaning and use

About #40901D

#40901D is classified as a cool green value with jewel tone visual character. #40901D is visually closest to Forest Green, a named green color with HEX #228B22.

The RGB channels are 64, 144, and 29, with green carrying the strongest channel weight. In HSL, the hue is 102deg with 66% saturation and 34% 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 0.2113, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 30.82, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text5.23:1AA Pass

White text4.02:1AA Fail

AA text options: #000000.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #40901D needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000005.23:1 · AA

White text#FFFFFF4.02:1 · Fail

Accessible Alternatives

#1E440E#FFFFFF text · best 11.12:1#1E440E

#64D534#000000 text · best 11.11:1#64D534

#6E1D90#FFFFFF text · best 9.37:1#6E1D90

#38A30A#000000 text · best 6.41:1#38A30A

#79901D#000000 text · best 5.82:1#79901D

Generated Palette

#40901D#40901D

#6E1D90#6E1D90

#79901D#79901D

#1D9034#1D9034

#64D534#64D534

#1E440E#1E440E

Color Harmonies

#6E1D90#6E1D90

#79901D#79901D

#1D9034#1D9034

#1D4090#1D4090

#901D40#901D40

Variants

#64D534#64D534

#1E440E#1E440E

#38A30A#38A30A

#477D31#477D31

#81CC61#81CC61

#40D600#40D600

Nearest Named Colors

Forest Green#228B22

Scheele Green#478800

Avocado#568203

Olive Drab#6B8E23

Olive Leaf#6B8E23

#40901D

CSS

Machine-Readable HEX Data (JSON)

About #40901D

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides