HEX atlas value

#066B1B

#066B1B is a cool green HEX color close to Emerald Dark. According to Colors Encyclopedia, it converts to RGB 6, 107, 27, HSL 132, 89%, 22%, has luminance 0.1063, and belongs to the dark and jewel tone groups.

green cool dark jewel-tone

#066B1B Sample readable text

HEX #066B1B

RGB rgb(6, 107, 27)

HSL hsl(132 89% 22%)

CMYK cmyk(94, 0, 75, 58)

Luminance 0.1063

Contrast Black 3.13:1White 6.72:1

CSS

--color-066b1b: #066B1B;
.background-066b1b { background-color: #066B1B; }
.text-066b1b { color: #066B1B; }

Luminance0.1063

Black text3.13:1AA Fail

White text6.72:1AA Pass

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":"#066B1B","rgb":[6,107,27],"hsl":[132,89,22],"cmyk":[94,0,75,58],"luminance":0.1063,"contrast":{"black":3.13,"white":6.72}}

WCAG

{"AA":["#FFFFFF","#F5F5F5"],"AAA":[]}

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":3.13,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":6.72,"wcagAA":true,"wcagAAA":false}]

Accessible alternatives

[{"name":"#011305","hex":"#011305","family":"green","bestTextColor":"#FFFFFF","contrastBlack":1.1,"contrastWhite":19.16,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#6A0656","hex":"#6A0656","family":"pink","bestTextColor":"#FFFFFF","contrastBlack":1.77,"contrastWhite":11.84,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"British Racing Green","hex":"#004225","family":"green","bestTextColor":"#FFFFFF","contrastBlack":1.81,"contrastWhite":11.63,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#0BC130","hex":"#0BC130","family":"green","bestTextColor":"#000000","contrastBlack":8.68,"contrastWhite":2.42,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#135E22","hex":"#135E22","family":"green","bestTextColor":"#FFFFFF","contrastBlack":2.65,"contrastWhite":7.92,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]}]

AI context

{"semanticGroups":["cool green","dark","jewel tone","dark green","jewel tone green","Emerald Dark adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","rich accent palettes","dark theme accents","botanical and wellness palettes"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/066b1b.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/emerald-dark.json","https://www.colorsencyclopedia.com/api/colors/dark-green.json","https://www.colorsencyclopedia.com/api/colors/green.json"]}

Harmonies

{"complementary":"#6A0656","analogous":["#246A06","#066A4C"],"triadic":["#1A066A","#6A1A06"],"tetradic":["#06246A","#6A0656","#6A4C06"],"splitComplementary":["#4C066A","#6A0624"],"monochromatic":["#0BC130","#066B1B","#011305"]}

Variants

{"light":"#0BC130","dark":"#011305","saturated":"#007016","desaturated":"#135E22","pastel":"#1FD143","neon":"#00991F"}

Nearest named colors

[{"slug":"emerald-dark","name":"Emerald Dark","hex":"#046307","distance":21.633307652783937},{"slug":"dark-green","name":"Dark Green","hex":"#006400","distance":28.53068523537421},{"slug":"green","name":"Green","hex":"#008000","distance":34.72751070837067},{"slug":"british-racing-green","name":"British Racing Green","hex":"#004225","distance":42.62628297189423},{"slug":"forest-green","name":"Forest Green","hex":"#228B22","distance":43.09292285283048}]

HEX meaning and use

About #066B1B

#066B1B is classified as a cool green value with dark and jewel tone visual character. #066B1B is visually closest to Emerald Dark, a named green color with HEX #046307.

The RGB channels are 6, 107, and 27, with green carrying the strongest channel weight. In HSL, the hue is 132deg with 89% saturation and 22% lightness, so this page treats it as a high-saturation, dark 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 0.1063, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 21.63, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text3.13:1AA Fail

White text6.72:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #066B1B needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000003.13:1 · Fail

White text#FFFFFF6.72:1 · AA

Accessible Alternatives

#011305#FFFFFF text · best 19.16:1#011305

#6A0656#FFFFFF text · best 11.84:1#6A0656

British Racing Green#FFFFFF text · best 11.63:1#004225

#0BC130#000000 text · best 8.68:1#0BC130

#135E22#FFFFFF text · best 7.92:1#135E22

Generated Palette

#066B1B#066B1B

#6A0656#6A0656

#246A06#246A06

#066A4C#066A4C

#0BC130#0BC130

#011305#011305

Color Harmonies

#6A0656#6A0656

#246A06#246A06

#066A4C#066A4C

#1A066A#1A066A

#6A1A06#6A1A06

Variants

#0BC130#0BC130

#011305#011305

#007016#007016

#135E22#135E22

#1FD143#1FD143

#00991F#00991F

Nearest Named Colors

Emerald Dark#046307

Dark Green#006400

Green#008000

British Racing Green#004225

Forest Green#228B22

#066B1B

CSS

Machine-Readable HEX Data (JSON)

About #066B1B

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides