Colors Encyclopedia

HEX atlas value

#3D180A

#3D180A is a warm orange HEX color close to Oxblood. According to Colors Encyclopedia, it converts to RGB 61, 24, 10, HSL 16, 72%, 14%, has luminance 0.0167, and belongs to the dark group.

orangewarmdark
#3D180A Sample readable text
HEX #3D180A
RGB rgb(61, 24, 10)
HSL hsl(16 72% 14%)
CMYK cmyk(0, 61, 84, 76)
Luminance 0.0167
Contrast Black 1.33:1White 15.74:1

CSS

--color-3d180a: #3D180A;
.background-3d180a { background-color: #3D180A; }
.text-3d180a { color: #3D180A; }

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
Luminance0.0167
Black text1.33:1AA Fail
White text15.74:1AA 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":"#3D180A","rgb":[61,24,10],"hsl":[16,72,14],"cmyk":[0,61,84,76],"luminance":0.0167,"contrast":{"black":1.33,"white":15.74}}
WCAG
{"AA":["#FFFFFF","#F5F5F5"],"AAA":["#FFFFFF","#F5F5F5"]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":1.33,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":15.74,"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":"Matte Black","hex":"#1A1A1A","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":1.21,"contrastWhite":17.41,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Carbon Fiber","hex":"#1C1C1C","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":1.23,"contrastWhite":17.05,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#3D0A16","hex":"#3D0A16","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.25,"contrastWhite":16.75,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Oxblood","hex":"#4A0000","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.29,"contrastWhite":16.25,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]}]
AI context
{"semanticGroups":["warm orange","dark","dark orange","Oxblood adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","dark theme accents"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/3d180a.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/oxblood.json","https://www.colorsencyclopedia.com/api/colors/rubber.json","https://www.colorsencyclopedia.com/api/colors/raisin.json"]}
Harmonies
{"complementary":"#0A303D","analogous":["#3D0A16","#3D310A"],"triadic":["#0A3D18","#180A3D"],"tetradic":["#163D0A","#0A303D","#310A3D"],"splitComplementary":["#0A3D31","#0A163D"],"monochromatic":["#8C3617","#3D180A","#000000"]}
Variants
{"light":"#8C3617","dark":"#000000","saturated":"#451402","desaturated":"#361B12","pastel":"#9C492B","neon":"#701E00"}
Nearest named colors
[{"slug":"oxblood","name":"Oxblood","hex":"#4A0000","distance":29.068883707497267},{"slug":"rubber","name":"Rubber","hex":"#2A2725","distance":36.26292872893749},{"slug":"raisin","name":"Raisin","hex":"#242124","distance":37.17526059088221},{"slug":"carbon-fiber","name":"Carbon Fiber","hex":"#1C1C1C","distance":37.8021163428716},{"slug":"matte-black","name":"Matte Black","hex":"#1A1A1A","distance":38.535697735995385}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #3D180A

#3D180A is classified as a warm orange value with dark visual character. #3D180A is visually closest to Oxblood, a named red color with HEX #4A0000.

The RGB channels are 61, 24, and 10, with red carrying the strongest channel weight. In HSL, the hue is 16deg with 72% 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 0.0167, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 29.07, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text1.33:1AA Fail
White text15.74:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: #FFFFFF, #F5F5F5.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #3D180A needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000001.33:1 · Fail
White text#FFFFFF15.74:1 · AAA

Accessible Alternatives

Black#FFFFFF text · best 21:1#000000
Matte Black#FFFFFF text · best 17.41:1#1A1A1A
Carbon Fiber#FFFFFF text · best 17.05:1#1C1C1C
#3D0A16#FFFFFF text · best 16.75:1#3D0A16
Oxblood#FFFFFF text · best 16.25:1#4A0000

Generated Palette

#3D180A#3D180A
#0A303D#0A303D
#3D0A16#3D0A16
#3D310A#3D310A
#8C3617#8C3617
Black#000000

Color Harmonies

#0A303D#0A303D
#3D0A16#3D0A16
#3D310A#3D310A
#0A3D18#0A3D18
#180A3D#180A3D

Variants

#8C3617#8C3617
Black#000000
#451402#451402
#361B12#361B12
#9C492B#9C492B
#701E00#701E00

Nearest Named Colors

Oxblood#4A0000
Rubber#2A2725
Raisin#242124
Carbon Fiber#1C1C1C
Matte Black#1A1A1A

Related HEX Guides

Oxblood colorOpen the nearest named color reference for #4A0000.Rubber colorOpen the nearest named color reference for #2A2725.Raisin colorOpen the nearest named color reference for #242124.Orange color familyBrowse named orange 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.#3D180A APIOpen the machine-readable JSON record for this HEX value.