HEX atlas value

#66601E

#66601E is a warm yellow HEX color close to Fern Frond. According to Colors Encyclopedia, it converts to RGB 102, 96, 30, HSL 55, 55%, 26%, has luminance 0.1128, and belongs to the earth tone group.

yellow warm earth-tone

#66601E Sample readable text

HEX #66601E

RGB rgb(102, 96, 30)

HSL hsl(55 55% 26%)

CMYK cmyk(0, 6, 71, 60)

Luminance 0.1128

Contrast Black 3.26:1White 6.45:1

CSS

--color-66601e: #66601E;
.background-66601e { background-color: #66601E; }
.text-66601e { color: #66601E; }

Luminance0.1128

Black text3.26:1AA Fail

White text6.45:1AA 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":"#66601E","rgb":[102,96,30],"hsl":[55,55,26],"cmyk":[0,6,71,60],"luminance":0.1128,"contrast":{"black":3.26,"white":6.45}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":3.26,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":6.45,"wcagAA":true,"wcagAAA":false}]

Accessible alternatives

[{"name":"#201E09","hex":"#201E09","family":"yellow","bestTextColor":"#FFFFFF","contrastBlack":1.25,"contrastWhite":16.77,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#1E2467","hex":"#1E2467","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":1.5,"contrastWhite":13.96,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#673C1E","hex":"#673C1E","family":"orange","bestTextColor":"#FFFFFF","contrastBlack":2.24,"contrastWhite":9.37,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#AEA432","hex":"#AEA432","family":"yellow","bestTextColor":"#000000","contrastBlack":8.16,"contrastWhite":2.57,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"#58552C","hex":"#58552C","family":"yellow","bestTextColor":"#FFFFFF","contrastBlack":2.75,"contrastWhite":7.64,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]}]

AI context

{"semanticGroups":["warm yellow","earth tone","earth tone yellow","Fern Frond adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","natural palettes","highlight and warning systems"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/66601e.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/fern-frond.json","https://www.colorsencyclopedia.com/api/colors/dark-olive-green.json","https://www.colorsencyclopedia.com/api/colors/moss-deep.json"]}

Harmonies

{"complementary":"#1E2467","analogous":["#673C1E","#48671E"],"triadic":["#1E6761","#611E67"],"tetradic":["#1E673C","#1E2467","#671E48"],"splitComplementary":["#1E4867","#3C1E67"],"monochromatic":["#AEA432","#66601E","#201E09"]}

Variants

{"light":"#AEA432","dark":"#201E09","saturated":"#756D0F","desaturated":"#58552C","pastel":"#B4AC50","neon":"#AD9F00"}

Nearest named colors

[{"slug":"fern-frond","name":"Fern Frond","hex":"#657220","distance":18.138357147217054},{"slug":"dark-olive-green","name":"Dark Olive Green","hex":"#556B2F","distance":26.43860813280457},{"slug":"moss-deep","name":"Moss Deep","hex":"#4A5D23","distance":28.600699292150182},{"slug":"coffee","name":"Coffee","hex":"#6F4E37","distance":32.09361307176243},{"slug":"loam","name":"Loam","hex":"#6B4F3A","distance":33.13608305156178}]

HEX meaning and use

About #66601E

#66601E is classified as a warm yellow value with earth tone visual character. #66601E is visually closest to Fern Frond, a named green color with HEX #657220.

The RGB channels are 102, 96, and 30, with red carrying the strongest channel weight. In HSL, the hue is 55deg with 55% saturation and 26% lightness, so this page treats it as a moderate-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 natural palettes. Its luminance is 0.1128, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 18.14, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text3.26:1AA Fail

White text6.45:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #66601E needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000003.26:1 · Fail

White text#FFFFFF6.45:1 · AA

Accessible Alternatives

#201E09#FFFFFF text · best 16.77:1#201E09

#1E2467#FFFFFF text · best 13.96:1#1E2467

#673C1E#FFFFFF text · best 9.37:1#673C1E

#AEA432#000000 text · best 8.16:1#AEA432

#58552C#FFFFFF text · best 7.64:1#58552C

Generated Palette

#66601E#66601E

#1E2467#1E2467

#673C1E#673C1E

#48671E#48671E

#AEA432#AEA432

#201E09#201E09

Color Harmonies

#1E2467#1E2467

#673C1E#673C1E

#48671E#48671E

#1E6761#1E6761

#611E67#611E67

Variants

#AEA432#AEA432

#201E09#201E09

#756D0F#756D0F

#58552C#58552C

#B4AC50#B4AC50

#AD9F00#AD9F00

Nearest Named Colors

Fern Frond#657220

Dark Olive Green#556B2F

Moss Deep#4A5D23

Coffee#6F4E37

Loam#6B4F3A

#66601E

CSS

Machine-Readable HEX Data (JSON)

About #66601E

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides