Colors Encyclopedia

HEX atlas value

#665B47

#665B47 is a warm orange HEX color close to Umber. According to Colors Encyclopedia, it converts to RGB 102, 91, 71, HSL 39, 18%, 34%, has luminance 0.1076, and belongs to the muted and earth tone groups.

orangewarmmutedearth-tone
#665B47 Sample readable text
HEX #665B47
RGB rgb(102, 91, 71)
HSL hsl(39 18% 34%)
CMYK cmyk(0, 11, 30, 60)
Luminance 0.1076
Contrast Black 3.15:1White 6.66:1

CSS

--color-665b47: #665B47;
.background-665b47 { background-color: #665B47; }
.text-665b47 { color: #665B47; }

Machine-readable data

Machine-Readable HEX Data (JSON)

Structured HEX color data for conversion, WCAG checks, CSS generation, automation, and AI ingestion.

AI-Ready Dataset v1.0.0
Luminance0.1076
Black text3.15:1AA Fail
White text6.66:1AA 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
Download JSON Open API
Structured sections
Color systems
{"hex":"#665B47","rgb":[102,91,71],"hsl":[39,18,34],"cmyk":[0,11,30,60],"luminance":0.1076,"contrast":{"black":3.15,"white":6.66}}
WCAG
{"AA":["#FFFFFF","#F5F5F5"],"AAA":[]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":3.15,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":6.66,"wcagAA":true,"wcagAAA":false}]
Accessible alternatives
[{"name":"#302B21","hex":"#302B21","family":"orange","bestTextColor":"#FFFFFF","contrastBlack":1.49,"contrastWhite":14.06,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Eggplant","hex":"#614051","family":"pink","bestTextColor":"#FFFFFF","contrastBlack":2.36,"contrastWhite":8.9,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#475266","hex":"#475266","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":2.67,"contrastWhite":7.88,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#664C47","hex":"#664C47","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.69,"contrastWhite":7.81,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Umber","hex":"#635147","family":"orange","bestTextColor":"#FFFFFF","contrastBlack":2.8,"contrastWhite":7.51,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]}]
AI context
{"semanticGroups":["warm orange","muted","earth tone","muted orange","earth tone orange","Umber adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","muted interface themes","natural palettes"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/665b47.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/umber.json","https://www.colorsencyclopedia.com/api/colors/loam.json","https://www.colorsencyclopedia.com/api/colors/coffee.json"]}
Harmonies
{"complementary":"#475266","analogous":["#664C47","#626647"],"triadic":["#47665B","#5B4766"],"tetradic":["#47664C","#475266","#664762"],"splitComplementary":["#476266","#4C4766"],"monochromatic":["#9B8B6F","#665B47","#302B21"]}
Variants
{"light":"#9B8B6F","dark":"#302B21","saturated":"#796134","desaturated":"#575757","pastel":"#9A9793","neon":"#D68B00"}
Nearest named colors
[{"slug":"umber","name":"Umber","hex":"#635147","distance":10.44030650891055},{"slug":"loam","name":"Loam","hex":"#6B4F3A","distance":18.384776310850235},{"slug":"coffee","name":"Coffee","hex":"#6F4E37","distance":22.494443758403985},{"slug":"eggplant","name":"Eggplant","hex":"#614051","distance":29.223278392404914},{"slug":"cactus-green","name":"Cactus Green","hex":"#587156","distance":30.083217912982647}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #665B47

#665B47 is classified as a warm orange value with muted and earth tone visual character. #665B47 is visually closest to Umber, a named orange color with HEX #635147.

The RGB channels are 102, 91, and 71, with red carrying the strongest channel weight. In HSL, the hue is 39deg with 18% saturation and 34% lightness, so this page treats it as a low-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 muted interface themes. Its luminance is 0.1076, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 10.44, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text3.15:1AA Fail
White text6.66:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #665B47 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000003.15:1 · Fail
White text#FFFFFF6.66:1 · AA

Accessible Alternatives

#302B21#FFFFFF text · best 14.06:1#302B21
Eggplant#FFFFFF text · best 8.9:1#614051
#475266#FFFFFF text · best 7.88:1#475266
#664C47#FFFFFF text · best 7.81:1#664C47
Umber#FFFFFF text · best 7.51:1#635147

Generated Palette

#665B47#665B47
#475266#475266
#664C47#664C47
#626647#626647
#9B8B6F#9B8B6F
#302B21#302B21

Color Harmonies

#475266#475266
#664C47#664C47
#626647#626647
#47665B#47665B
#5B4766#5B4766

Variants

#9B8B6F#9B8B6F
#302B21#302B21
#796134#796134
#575757#575757
#9A9793#9A9793
#D68B00#D68B00

Nearest Named Colors

Umber#635147
Loam#6B4F3A
Coffee#6F4E37
Eggplant#614051
Cactus Green#587156

Related HEX Guides

Umber colorOpen the nearest named color reference for #635147.Loam colorOpen the nearest named color reference for #6B4F3A.Coffee colorOpen the nearest named color reference for #6F4E37.Orange color familyBrowse named orange colors related to this HEX value.Warm colorsExplore colors with similar temperature behavior.Muted colorsFind colors in the muted group.Earth Tone colorsFind colors in the earth tone group.Color palettesBrowse palette systems related to generated color combinations.Compare colorsCompare named colors near this HEX value.Accessible colorsBrowse WCAG-friendly named colors and safe text options.#665B47 APIOpen the machine-readable JSON record for this HEX value.