Colors Encyclopedia

HEX atlas value

#821C03

#821C03 is a warm red HEX color close to Barn Red. According to Colors Encyclopedia, it converts to RGB 130, 28, 3, HSL 12, 95%, 26%, has luminance 0.0558, and belongs to the balanced group.

redwarmbalanced
#821C03 Sample readable text
HEX #821C03
RGB rgb(130, 28, 3)
HSL hsl(12 95% 26%)
CMYK cmyk(0, 78, 98, 49)
Luminance 0.0558
Contrast Black 2.12:1White 9.92:1

CSS

--color-821c03: #821C03;
.background-821c03 { background-color: #821C03; }
.text-821c03 { color: #821C03; }

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
Luminance0.0558
Black text2.12:1AA Fail
White text9.92:1AA 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":"#821C03","rgb":[130,28,3],"hsl":[12,95,26],"cmyk":[0,78,98,49],"luminance":0.0558,"contrast":{"black":2.12,"white":9.92}}
WCAG
{"AA":["#FFFFFF","#F5F5F5"],"AAA":["#FFFFFF","#F5F5F5"]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":2.12,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":9.92,"wcagAA":true,"wcagAAA":true}]
Accessible alternatives
[{"name":"#280901","hex":"#280901","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.13,"contrastWhite":18.58,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Barn Red","hex":"#7C0A02","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.9,"contrastWhite":11.04,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Maroon","hex":"#800000","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.92,"contrastWhite":10.95,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#810329","hex":"#810329","family":"pink","bestTextColor":"#FFFFFF","contrastBlack":1.98,"contrastWhite":10.62,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#732512","hex":"#732512","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2,"contrastWhite":10.49,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]}]
AI context
{"semanticGroups":["warm red","balanced","balanced red","Barn Red adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-attention visual states"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/821c03.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/barn-red.json","https://www.colorsencyclopedia.com/api/colors/maroon.json","https://www.colorsencyclopedia.com/api/colors/dark-red.json"]}
Harmonies
{"complementary":"#036881","analogous":["#810329","#815B03"],"triadic":["#03811D","#1D0381"],"tetradic":["#298103","#036881","#5B0381"],"splitComplementary":["#03815B","#032981"],"monochromatic":["#DB3006","#821C03","#280901"]}
Variants
{"light":"#DB3006","dark":"#280901","saturated":"#851B00","desaturated":"#732512","pastel":"#E6461E","neon":"#AD2300"}
Nearest named colors
[{"slug":"barn-red","name":"Barn Red","hex":"#7C0A02","distance":19},{"slug":"maroon","name":"Maroon","hex":"#800000","distance":28.231188426986208},{"slug":"dark-red","name":"Dark Red","hex":"#8B0000","distance":29.563490998188964},{"slug":"crimson-red","name":"Crimson Red","hex":"#990000","distance":36.359317925395686},{"slug":"pompeian-red","name":"Pompeian Red","hex":"#A42A04","distance":36.78314831549904}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #821C03

#821C03 is classified as a warm red value with balanced visual character. #821C03 is visually closest to Barn Red, a named red color with HEX #7C0A02.

The RGB channels are 130, 28, and 3, with red carrying the strongest channel weight. In HSL, the hue is 12deg with 95% saturation and 26% 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 high-attention visual states. Its luminance is 0.0558, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 19.00, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text2.12:1AA Fail
White text9.92:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: #FFFFFF, #F5F5F5.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #821C03 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000002.12:1 · Fail
White text#FFFFFF9.92:1 · AAA

Accessible Alternatives

#280901#FFFFFF text · best 18.58:1#280901
Barn Red#FFFFFF text · best 11.04:1#7C0A02
Maroon#FFFFFF text · best 10.95:1#800000
#810329#FFFFFF text · best 10.62:1#810329
#732512#FFFFFF text · best 10.49:1#732512

Generated Palette

#821C03#821C03
#036881#036881
#810329#810329
#815B03#815B03
#DB3006#DB3006
#280901#280901

Color Harmonies

#036881#036881
#810329#810329
#815B03#815B03
#03811D#03811D
#1D0381#1D0381

Variants

#DB3006#DB3006
#280901#280901
#851B00#851B00
#732512#732512
#E6461E#E6461E
#AD2300#AD2300

Nearest Named Colors

Barn Red#7C0A02
Maroon#800000
Dark Red#8B0000
Crimson Red#990000
Pompeian Red#A42A04

Related HEX Guides

Barn Red colorOpen the nearest named color reference for #7C0A02.Maroon colorOpen the nearest named color reference for #800000.Dark Red colorOpen the nearest named color reference for #8B0000.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.#821C03 APIOpen the machine-readable JSON record for this HEX value.