HEX atlas value

#66901D

#66901D is a cool green HEX color close to Olive Drab. According to Colors Encyclopedia, it converts to RGB 102, 144, 29, HSL 82, 66%, 34%, has luminance 0.2286, and belongs to the jewel tone group.

green cool jewel-tone

#66901D Sample readable text

HEX #66901D

RGB rgb(102, 144, 29)

HSL hsl(82 66% 34%)

CMYK cmyk(29, 0, 80, 44)

Luminance 0.2286

Contrast Black 5.57:1White 3.77:1

CSS

--color-66901d: #66901D;
.background-66901d { background-color: #66901D; }
.text-66901d { color: #66901D; }

Luminance0.2286

Black text5.57:1AA Pass

White text3.77:1AA 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":"#66901D","rgb":[102,144,29],"hsl":[82,66,34],"cmyk":[29,0,80,44],"luminance":0.2286,"contrast":{"black":5.57,"white":3.77}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":5.57,"wcagAA":true,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":3.77,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#9AD534","hex":"#9AD534","family":"green","bestTextColor":"#000000","contrastBlack":11.94,"contrastWhite":1.76,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#471D90","hex":"#471D90","family":"purple","bestTextColor":"#FFFFFF","contrastBlack":1.85,"contrastWhite":11.38,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#30440E","hex":"#30440E","family":"green","bestTextColor":"#FFFFFF","contrastBlack":1.96,"contrastWhite":10.73,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#6BA30A","hex":"#6BA30A","family":"green","bestTextColor":"#000000","contrastBlack":6.87,"contrastWhite":3.06,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":[]},{"name":"Olive Leaf","hex":"#6B8E23","family":"green","bestTextColor":"#000000","contrastBlack":5.52,"contrastWhite":3.81,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":[]}]

AI context

{"semanticGroups":["cool green","jewel tone","jewel tone green","Olive Drab 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/66901d.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/olive-drab.json","https://www.colorsencyclopedia.com/api/colors/olive-leaf.json","https://www.colorsencyclopedia.com/api/colors/fern-frond.json"]}

Harmonies

{"complementary":"#471D90","analogous":["#90811D","#2D901D"],"triadic":["#1D6690","#901D66"],"tetradic":["#1D9081","#471D90","#901D2D"],"splitComplementary":["#1D2D90","#811D90"],"monochromatic":["#9AD534","#66901D","#30440E"]}

Variants

{"light":"#9AD534","dark":"#30440E","saturated":"#6BA30A","desaturated":"#617D31","pastel":"#A5CC61","neon":"#88D600"}

Nearest named colors

[{"slug":"olive-drab","name":"Olive Drab","hex":"#6B8E23","distance":8.06225774829855},{"slug":"olive-leaf","name":"Olive Leaf","hex":"#6B8E23","distance":8.06225774829855},{"slug":"fern-frond","name":"Fern Frond","hex":"#657220","distance":30.166206257996713},{"slug":"olive-green","name":"Olive Green","hex":"#708238","distance":32.01562118716424},{"slug":"avocado","name":"Avocado","hex":"#568203","distance":33.58571124749333}]

HEX meaning and use

About #66901D

#66901D is classified as a cool green value with jewel tone visual character. #66901D is visually closest to Olive Drab, a named green color with HEX #6B8E23.

The RGB channels are 102, 144, and 29, with green carrying the strongest channel weight. In HSL, the hue is 82deg 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 0.2286, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 8.06, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text5.57:1AA Pass

White text3.77:1AA Fail

AA text options: #000000, #1A1A1A.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #66901D needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000005.57:1 · AA

White text#FFFFFF3.77:1 · Fail

Accessible Alternatives

#9AD534#000000 text · best 11.94:1#9AD534

#471D90#FFFFFF text · best 11.38:1#471D90

#30440E#FFFFFF text · best 10.73:1#30440E

#6BA30A#000000 text · best 6.87:1#6BA30A

Olive Leaf#000000 text · best 5.52:1#6B8E23

Generated Palette

#66901D#66901D

#471D90#471D90

#90811D#90811D

#2D901D#2D901D

#9AD534#9AD534

#30440E#30440E

Color Harmonies

#471D90#471D90

#90811D#90811D

#2D901D#2D901D

#1D6690#1D6690

#901D66#901D66

Variants

#9AD534#9AD534

#30440E#30440E

#6BA30A#6BA30A

#617D31#617D31

#A5CC61#A5CC61

#88D600#88D600

Nearest Named Colors

Olive Drab#6B8E23

Olive Leaf#6B8E23

Fern Frond#657220

Olive Green#708238

Avocado#568203

#66901D

CSS

Machine-Readable HEX Data (JSON)

About #66901D

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides