Colors Encyclopedia

HEX atlas value

#28211F

#28211F is a warm red HEX color close to Raisin. According to Colors Encyclopedia, it converts to RGB 40, 33, 31, HSL 13, 13%, 14%, has luminance 0.0164, and belongs to the dark group.

redwarmdark
#28211F Sample readable text
HEX #28211F
RGB rgb(40, 33, 31)
HSL hsl(13 13% 14%)
CMYK cmyk(0, 18, 22, 84)
Luminance 0.0164
Contrast Black 1.33:1White 15.81:1

CSS

--color-28211f: #28211F;
.background-28211f { background-color: #28211F; }
.text-28211f { color: #28211F; }

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
Luminance0.0164
Black text1.33:1AA Fail
White text15.81:1AA 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":"#28211F","rgb":[40,33,31],"hsl":[13,13,14],"cmyk":[0,18,22,84],"luminance":0.0164,"contrast":{"black":1.33,"white":15.81}}
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":15.81,"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":"Carbon Fiber","hex":"#1C1C1C","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":1.23,"contrastWhite":17.05,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#281F22","hex":"#281F22","family":"pink","bestTextColor":"#FFFFFF","contrastBlack":1.31,"contrastWhite":16.03,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#301D17","hex":"#301D17","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.31,"contrastWhite":15.98,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Raisin","hex":"#242124","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":1.32,"contrastWhite":15.93,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]}]
AI context
{"semanticGroups":["warm red","dark","dark red","Raisin adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","dark theme accents","high-attention visual states"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/28211f.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/raisin.json","https://www.colorsencyclopedia.com/api/colors/rubber.json","https://www.colorsencyclopedia.com/api/colors/slate-black.json"]}
Harmonies
{"complementary":"#1F2628","analogous":["#281F22","#28261F"],"triadic":["#1F2821","#211F28"],"tetradic":["#22281F","#1F2628","#261F28"],"splitComplementary":["#1F2826","#1F2228"],"monochromatic":["#5C4C47","#28211F","#000000"]}
Variants
{"light":"#5C4C47","dark":"#000000","saturated":"#301D17","desaturated":"#242424","pastel":"#636363","neon":"#701800"}
Nearest named colors
[{"slug":"raisin","name":"Raisin","hex":"#242124","distance":6.4031242374328485},{"slug":"rubber","name":"Rubber","hex":"#2A2725","distance":8.717797887081348},{"slug":"slate-black","name":"Slate Black","hex":"#26282A","distance":13.19090595827292},{"slug":"carbon-fiber","name":"Carbon Fiber","hex":"#1C1C1C","distance":13.341664064126334},{"slug":"asphalt","name":"Asphalt","hex":"#2B2B2B","distance":15.905973720586866}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #28211F

#28211F is classified as a warm red value with dark visual character. #28211F is visually closest to Raisin, a named gray color with HEX #242124.

The RGB channels are 40, 33, and 31, with red carrying the strongest channel weight. In HSL, the hue is 13deg with 13% saturation and 14% 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 dark theme accents. Its luminance is 0.0164, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 6.40, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text1.33:1AA Fail
White text15.81:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: #FFFFFF, #F5F5F5.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #28211F needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000001.33:1 · Fail
White text#FFFFFF15.81:1 · AAA

Accessible Alternatives

Black#FFFFFF text · best 21:1#000000
Carbon Fiber#FFFFFF text · best 17.05:1#1C1C1C
#281F22#FFFFFF text · best 16.03:1#281F22
#301D17#FFFFFF text · best 15.98:1#301D17
Raisin#FFFFFF text · best 15.93:1#242124

Generated Palette

#28211F#28211F
#1F2628#1F2628
#281F22#281F22
#28261F#28261F
#5C4C47#5C4C47
Black#000000

Color Harmonies

#1F2628#1F2628
#281F22#281F22
#28261F#28261F
#1F2821#1F2821
#211F28#211F28

Variants

#5C4C47#5C4C47
Black#000000
#301D17#301D17
#242424#242424
#636363#636363
#701800#701800

Nearest Named Colors

Raisin#242124
Rubber#2A2725
Slate Black#26282A
Carbon Fiber#1C1C1C
Asphalt#2B2B2B

Related HEX Guides

Raisin colorOpen the nearest named color reference for #242124.Rubber colorOpen the nearest named color reference for #2A2725.Slate Black colorOpen the nearest named color reference for #26282A.Red color familyBrowse named red 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.#28211F APIOpen the machine-readable JSON record for this HEX value.