Colors Encyclopedia

HEX atlas value

#5A403F

#5A403F is a warm red HEX color close to Walnut. According to Colors Encyclopedia, it converts to RGB 90, 64, 63, HSL 2, 18%, 30%, has luminance 0.062, and belongs to the muted group.

redwarmmuted
#5A403F Sample readable text
HEX #5A403F
RGB rgb(90, 64, 63)
HSL hsl(2 18% 30%)
CMYK cmyk(0, 29, 30, 65)
Luminance 0.062
Contrast Black 2.24:1White 9.38:1

CSS

--color-5a403f: #5A403F;
.background-5a403f { background-color: #5A403F; }
.text-5a403f { color: #5A403F; }

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
Luminance0.062
Black text2.24:1AA Fail
White text9.38:1AA 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":"#5A403F","rgb":[90,64,63],"hsl":[2,18,30],"cmyk":[0,29,30,65],"luminance":0.062,"contrast":{"black":2.24,"white":9.38}}
WCAG
{"AA":["#FFFFFF","#F5F5F5"],"AAA":["#FFFFFF","#F5F5F5"]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":2.24,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":9.38,"wcagAA":true,"wcagAAA":true}]
Accessible alternatives
[{"name":"#241919","hex":"#241919","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.23,"contrastWhite":17.1,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Taupe","hex":"#483C32","family":"orange","bestTextColor":"#FFFFFF","contrastBlack":1.97,"contrastWhite":10.67,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#6B302E","hex":"#6B302E","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.09,"contrastWhite":10.06,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Walnut","hex":"#5C4033","family":"orange","bestTextColor":"#FFFFFF","contrastBlack":2.24,"contrastWhite":9.39,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#5A3F4C","hex":"#5A3F4C","family":"pink","bestTextColor":"#FFFFFF","contrastBlack":2.25,"contrastWhite":9.33,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]}]
AI context
{"semanticGroups":["warm red","muted","muted red","Walnut adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","muted interface themes","high-attention visual states"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/5a403f.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/walnut.json","https://www.colorsencyclopedia.com/api/colors/eggplant.json","https://www.colorsencyclopedia.com/api/colors/umber.json"]}
Harmonies
{"complementary":"#3F595A","analogous":["#5A3F4C","#5A4D3F"],"triadic":["#3F5A40","#403F5A"],"tetradic":["#4C5A3F","#3F595A","#4D3F5A"],"splitComplementary":["#3F5A4D","#3F4C5A"],"monochromatic":["#906664","#5A403F","#241919"]}
Variants
{"light":"#906664","dark":"#241919","saturated":"#6B302E","desaturated":"#4D4D4D","pastel":"#908989","neon":"#C20600"}
Nearest named colors
[{"slug":"walnut","name":"Walnut","hex":"#5C4033","distance":12.165525060596439},{"slug":"eggplant","name":"Eggplant","hex":"#614051","distance":19.313207915827967},{"slug":"umber","name":"Umber","hex":"#635147","distance":20.83266665599966},{"slug":"asphalt-gray","name":"Asphalt Gray","hex":"#4B4B4B","distance":22.135943621178654},{"slug":"taupe","name":"Taupe","hex":"#483C32","distance":22.561028345356956}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #5A403F

#5A403F is classified as a warm red value with muted visual character. #5A403F is visually closest to Walnut, a named orange color with HEX #5C4033.

The RGB channels are 90, 64, and 63, with red carrying the strongest channel weight. In HSL, the hue is 2deg with 18% 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 muted interface themes. Its luminance is 0.062, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 12.17, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text2.24:1AA Fail
White text9.38:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: #FFFFFF, #F5F5F5.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #5A403F needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000002.24:1 · Fail
White text#FFFFFF9.38:1 · AAA

Accessible Alternatives

#241919#FFFFFF text · best 17.1:1#241919
Taupe#FFFFFF text · best 10.67:1#483C32
#6B302E#FFFFFF text · best 10.06:1#6B302E
Walnut#FFFFFF text · best 9.39:1#5C4033
#5A3F4C#FFFFFF text · best 9.33:1#5A3F4C

Generated Palette

#5A403F#5A403F
#3F595A#3F595A
#5A3F4C#5A3F4C
#5A4D3F#5A4D3F
#906664#906664
#241919#241919

Color Harmonies

#3F595A#3F595A
#5A3F4C#5A3F4C
#5A4D3F#5A4D3F
#3F5A40#3F5A40
#403F5A#403F5A

Variants

#906664#906664
#241919#241919
#6B302E#6B302E
#4D4D4D#4D4D4D
#908989#908989
#C20600#C20600

Nearest Named Colors

Walnut#5C4033
Eggplant#614051
Umber#635147
Asphalt Gray#4B4B4B
Taupe#483C32

Related HEX Guides

Walnut colorOpen the nearest named color reference for #5C4033.Eggplant colorOpen the nearest named color reference for #614051.Umber colorOpen the nearest named color reference for #635147.Red color familyBrowse named red colors related to this HEX value.Warm colorsExplore colors with similar temperature behavior.Muted colorsFind colors in the muted 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.#5A403F APIOpen the machine-readable JSON record for this HEX value.