Colors Encyclopedia

HEX atlas value

#633C36

#633C36 is a warm red HEX color close to Walnut. According to Colors Encyclopedia, it converts to RGB 99, 60, 54, HSL 8, 29%, 30%, has luminance 0.0615, and belongs to the balanced group.

redwarmbalanced
#633C36 Sample readable text
HEX #633C36
RGB rgb(99, 60, 54)
HSL hsl(8 29% 30%)
CMYK cmyk(0, 39, 45, 61)
Luminance 0.0615
Contrast Black 2.23:1White 9.42:1

CSS

--color-633c36: #633C36;
.background-633c36 { background-color: #633C36; }
.text-633c36 { color: #633C36; }

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
Luminance0.0615
Black text2.23:1AA Fail
White text9.42:1AA 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":"#633C36","rgb":[99,60,54],"hsl":[8,29,30],"cmyk":[0,39,45,61],"luminance":0.0615,"contrast":{"black":2.23,"white":9.42}}
WCAG
{"AA":["#FFFFFF","#F5F5F5"],"AAA":["#FFFFFF","#F5F5F5"]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":2.23,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":9.42,"wcagAA":true,"wcagAAA":true}]
Accessible alternatives
[{"name":"#271816","hex":"#271816","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.23,"contrastWhite":17.1,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Bark","hex":"#5B3A29","family":"orange","bestTextColor":"#FFFFFF","contrastBlack":2.08,"contrastWhite":10.09,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#633647","hex":"#633647","family":"pink","bestTextColor":"#FFFFFF","contrastBlack":2.15,"contrastWhite":9.77,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Wine Red","hex":"#722F37","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.18,"contrastWhite":9.64,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#743025","hex":"#743025","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.19,"contrastWhite":9.58,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]}]
AI context
{"semanticGroups":["warm red","balanced","balanced red","Walnut adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-attention visual states"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/633c36.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/walnut.json","https://www.colorsencyclopedia.com/api/colors/bark.json","https://www.colorsencyclopedia.com/api/colors/garnet.json"]}
Harmonies
{"complementary":"#365D63","analogous":["#633647","#635236"],"triadic":["#36633C","#3C3663"],"tetradic":["#476336","#365D63","#523663"],"splitComplementary":["#366352","#364763"],"monochromatic":["#9E6057","#633C36","#271816"]}
Variants
{"light":"#9E6057","dark":"#271816","saturated":"#743025","desaturated":"#524947","pastel":"#9C807C","neon":"#C21A00"}
Nearest named colors
[{"slug":"walnut","name":"Walnut","hex":"#5C4033","distance":8.602325267042627},{"slug":"bark","name":"Bark","hex":"#5B3A29","distance":15.394804318340652},{"slug":"garnet","name":"Garnet","hex":"#733635","distance":17.11724276862369},{"slug":"wine-red","name":"Wine Red","hex":"#722F37","distance":19.87460691435179},{"slug":"loam","name":"Loam","hex":"#6B4F3A","distance":21}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #633C36

#633C36 is classified as a warm red value with balanced visual character. #633C36 is visually closest to Walnut, a named orange color with HEX #5C4033.

The RGB channels are 99, 60, and 54, with red carrying the strongest channel weight. In HSL, the hue is 8deg with 29% saturation and 30% lightness, so this page treats it as a low-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 high-attention visual states. Its luminance is 0.0615, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 8.60, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text2.23:1AA Fail
White text9.42:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: #FFFFFF, #F5F5F5.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #633C36 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000002.23:1 · Fail
White text#FFFFFF9.42:1 · AAA

Accessible Alternatives

#271816#FFFFFF text · best 17.1:1#271816
Bark#FFFFFF text · best 10.09:1#5B3A29
#633647#FFFFFF text · best 9.77:1#633647
Wine Red#FFFFFF text · best 9.64:1#722F37
#743025#FFFFFF text · best 9.58:1#743025

Generated Palette

#633C36#633C36
#365D63#365D63
#633647#633647
#635236#635236
#9E6057#9E6057
#271816#271816

Color Harmonies

#365D63#365D63
#633647#633647
#635236#635236
#36633C#36633C
#3C3663#3C3663

Variants

#9E6057#9E6057
#271816#271816
#743025#743025
#524947#524947
#9C807C#9C807C
#C21A00#C21A00

Nearest Named Colors

Walnut#5C4033
Bark#5B3A29
Garnet#733635
Wine Red#722F37
Loam#6B4F3A

Related HEX Guides

Walnut colorOpen the nearest named color reference for #5C4033.Bark colorOpen the nearest named color reference for #5B3A29.Garnet colorOpen the nearest named color reference for #733635.Red color familyBrowse named red colors related to this HEX value.Warm colorsExplore colors with similar temperature behavior.Balanced colorsFind colors in the balanced 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.#633C36 APIOpen the machine-readable JSON record for this HEX value.