Colors Encyclopedia

HEX atlas value

#645F0C

#645F0C is a warm yellow HEX color close to Fern Frond. According to Colors Encyclopedia, it converts to RGB 100, 95, 12, HSL 57, 79%, 22%, has luminance 0.1092, and belongs to the dark group.

yellowwarmdark
#645F0C Sample readable text
HEX #645F0C
RGB rgb(100, 95, 12)
HSL hsl(57 79% 22%)
CMYK cmyk(0, 5, 88, 61)
Luminance 0.1092
Contrast Black 3.18:1White 6.6:1

CSS

--color-645f0c: #645F0C;
.background-645f0c { background-color: #645F0C; }
.text-645f0c { color: #645F0C; }

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
Luminance0.1092
Black text3.18:1AA Fail
White text6.6:1AA 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":"#645F0C","rgb":[100,95,12],"hsl":[57,79,22],"cmyk":[0,5,88,61],"luminance":0.1092,"contrast":{"black":3.18,"white":6.6}}
WCAG
{"AA":["#FFFFFF","#F5F5F5"],"AAA":[]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":3.18,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":6.6,"wcagAA":true,"wcagAAA":false}]
Accessible alternatives
[{"name":"#121102","hex":"#121102","family":"yellow","bestTextColor":"#FFFFFF","contrastBlack":1.11,"contrastWhite":18.99,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#0C1064","hex":"#0C1064","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":1.27,"contrastWhite":16.48,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#64340C","hex":"#64340C","family":"orange","bestTextColor":"#FFFFFF","contrastBlack":2.04,"contrastWhite":10.3,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#B7AF15","hex":"#B7AF15","family":"yellow","bestTextColor":"#000000","contrastBlack":9.16,"contrastWhite":2.29,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"Sepia","hex":"#704214","family":"orange","bestTextColor":"#FFFFFF","contrastBlack":2.48,"contrastWhite":8.47,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]}]
AI context
{"semanticGroups":["warm yellow","dark","dark yellow","Fern Frond adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","dark theme accents","highlight and warning systems"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/645f0c.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/fern-frond.json","https://www.colorsencyclopedia.com/api/colors/sepia.json","https://www.colorsencyclopedia.com/api/colors/moss-deep.json"]}
Harmonies
{"complementary":"#0C1064","analogous":["#64340C","#3D640C"],"triadic":["#0C6460","#600C64"],"tetradic":["#0C6434","#0C1064","#640C3D"],"splitComplementary":["#0C3D64","#340C64"],"monochromatic":["#B7AF15","#645F0C","#121102"]}
Variants
{"light":"#B7AF15","dark":"#121102","saturated":"#706B00","desaturated":"#585518","pastel":"#C5BD2B","neon":"#999100"}
Nearest named colors
[{"slug":"fern-frond","name":"Fern Frond","hex":"#657220","distance":27.60434748368452},{"slug":"sepia","name":"Sepia","hex":"#704214","distance":32.38826948140329},{"slug":"moss-deep","name":"Moss Deep","hex":"#4A5D23","distance":34.77067730142742},{"slug":"avocado","name":"Avocado","hex":"#568203","distance":38.7556447501522},{"slug":"dark-olive-green","name":"Dark Olive Green","hex":"#556B2F","distance":39.92492955535426}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #645F0C

#645F0C is classified as a warm yellow value with dark visual character. #645F0C is visually closest to Fern Frond, a named green color with HEX #657220.

The RGB channels are 100, 95, and 12, with red carrying the strongest channel weight. In HSL, the hue is 57deg with 79% 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 dark theme accents. Its luminance is 0.1092, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 27.60, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text3.18:1AA Fail
White text6.6:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #645F0C needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000003.18:1 · Fail
White text#FFFFFF6.6:1 · AA

Accessible Alternatives

#121102#FFFFFF text · best 18.99:1#121102
#0C1064#FFFFFF text · best 16.48:1#0C1064
#64340C#FFFFFF text · best 10.3:1#64340C
#B7AF15#000000 text · best 9.16:1#B7AF15
Sepia#FFFFFF text · best 8.47:1#704214

Generated Palette

#645F0C#645F0C
#0C1064#0C1064
#64340C#64340C
#3D640C#3D640C
#B7AF15#B7AF15
#121102#121102

Color Harmonies

#0C1064#0C1064
#64340C#64340C
#3D640C#3D640C
#0C6460#0C6460
#600C64#600C64

Variants

#B7AF15#B7AF15
#121102#121102
#706B00#706B00
#585518#585518
#C5BD2B#C5BD2B
#999100#999100

Nearest Named Colors

Fern Frond#657220
Sepia#704214
Moss Deep#4A5D23
Avocado#568203
Dark Olive Green#556B2F

Related HEX Guides

Fern Frond colorOpen the nearest named color reference for #657220.Sepia colorOpen the nearest named color reference for #704214.Moss Deep colorOpen the nearest named color reference for #4A5D23.Yellow color familyBrowse named yellow colors related to this HEX value.Warm colorsExplore colors with similar temperature behavior.Dark colorsFind colors in the dark 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.#645F0C APIOpen the machine-readable JSON record for this HEX value.