Colors Encyclopedia

HEX atlas value

#423306

#423306 is a warm yellow HEX color close to Espresso. According to Colors Encyclopedia, it converts to RGB 66, 51, 6, HSL 45, 83%, 14%, has luminance 0.0354, and belongs to the dark group.

yellowwarmdark
#423306 Sample readable text
HEX #423306
RGB rgb(66, 51, 6)
HSL hsl(45 83% 14%)
CMYK cmyk(0, 23, 91, 74)
Luminance 0.0354
Contrast Black 1.71:1White 12.3:1

CSS

--color-423306: #423306;
.background-423306 { background-color: #423306; }
.text-423306 { color: #423306; }

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
Luminance0.0354
Black text1.71:1AA Fail
White text12.3:1AA 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":"#423306","rgb":[66,51,6],"hsl":[45,83,14],"cmyk":[0,23,91,74],"luminance":0.0354,"contrast":{"black":1.71,"white":12.3}}
WCAG
{"AA":["#FFFFFF","#F5F5F5"],"AAA":["#FFFFFF","#F5F5F5"]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":1.71,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":12.3,"wcagAA":true,"wcagAAA":true}]
Accessible alternatives
[{"name":"Black","hex":"#000000","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":1,"contrastWhite":21,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#061541","hex":"#061541","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":1.19,"contrastWhite":17.62,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#411506","hex":"#411506","family":"orange","bestTextColor":"#FFFFFF","contrastBlack":1.33,"contrastWhite":15.74,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Rubber","hex":"#2A2725","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":1.42,"contrastWhite":14.83,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#392F0E","hex":"#392F0E","family":"yellow","bestTextColor":"#FFFFFF","contrastBlack":1.59,"contrastWhite":13.24,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]}]
AI context
{"semanticGroups":["warm yellow","dark","dark yellow","Espresso 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/423306.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/espresso.json","https://www.colorsencyclopedia.com/api/colors/pine-bark.json","https://www.colorsencyclopedia.com/api/colors/rubber.json"]}
Harmonies
{"complementary":"#061541","analogous":["#411506","#334106"],"triadic":["#064133","#330641"],"tetradic":["#064115","#061541","#410633"],"splitComplementary":["#063341","#150641"],"monochromatic":["#95730E","#423306","#000000"]}
Variants
{"light":"#95730E","dark":"#000000","saturated":"#473600","desaturated":"#392F0E","pastel":"#A78520","neon":"#705400"}
Nearest named colors
[{"slug":"espresso","name":"Espresso","hex":"#4B3621","distance":28.61817604250837},{"slug":"pine-bark","name":"Pine Bark","hex":"#4A3728","distance":35.156791662493895},{"slug":"rubber","name":"Rubber","hex":"#2A2725","distance":41},{"slug":"peat","name":"Peat","hex":"#3B2F2F","distance":41.78516483155236},{"slug":"bark","name":"Bark","hex":"#5B3A29","distance":43.57751713900185}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #423306

#423306 is classified as a warm yellow value with dark visual character. #423306 is visually closest to Espresso, a named orange color with HEX #4B3621.

The RGB channels are 66, 51, and 6, with red carrying the strongest channel weight. In HSL, the hue is 45deg with 83% saturation and 14% 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 0.0354, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 28.62, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text1.71:1AA Fail
White text12.3:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: #FFFFFF, #F5F5F5.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #423306 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000001.71:1 · Fail
White text#FFFFFF12.3:1 · AAA

Accessible Alternatives

Black#FFFFFF text · best 21:1#000000
#061541#FFFFFF text · best 17.62:1#061541
#411506#FFFFFF text · best 15.74:1#411506
Rubber#FFFFFF text · best 14.83:1#2A2725
#392F0E#FFFFFF text · best 13.24:1#392F0E

Generated Palette

#423306#423306
#061541#061541
#411506#411506
#334106#334106
#95730E#95730E
Black#000000

Color Harmonies

#061541#061541
#411506#411506
#334106#334106
#064133#064133
#330641#330641

Variants

#95730E#95730E
Black#000000
#473600#473600
#392F0E#392F0E
#A78520#A78520
#705400#705400

Nearest Named Colors

Espresso#4B3621
Pine Bark#4A3728
Rubber#2A2725
Peat#3B2F2F
Bark#5B3A29

Related HEX Guides

Espresso colorOpen the nearest named color reference for #4B3621.Pine Bark colorOpen the nearest named color reference for #4A3728.Rubber colorOpen the nearest named color reference for #2A2725.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.#423306 APIOpen the machine-readable JSON record for this HEX value.