Colors Encyclopedia

HEX atlas value

#2A1B09

#2A1B09 is a warm orange HEX color close to Matte Black. According to Colors Encyclopedia, it converts to RGB 42, 27, 9, HSL 33, 65%, 10%, has luminance 0.013, and belongs to the dark group.

orangewarmdark
#2A1B09 Sample readable text
HEX #2A1B09
RGB rgb(42, 27, 9)
HSL hsl(33 65% 10%)
CMYK cmyk(0, 36, 79, 84)
Luminance 0.013
Contrast Black 1.26:1White 16.67:1

CSS

--color-2a1b09: #2A1B09;
.background-2a1b09 { background-color: #2A1B09; }
.text-2a1b09 { color: #2A1B09; }

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
Luminance0.013
Black text1.26:1AA Fail
White text16.67:1AA 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":"#2A1B09","rgb":[42,27,9],"hsl":[33,65,10],"cmyk":[0,36,79,84],"luminance":0.013,"contrast":{"black":1.26,"white":16.67}}
WCAG
{"AA":["#FFFFFF","#F5F5F5"],"AAA":["#FFFFFF","#F5F5F5"]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":1.26,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":16.67,"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 Black","hex":"#0C0C0C","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":1.07,"contrastWhite":19.55,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#2A0B09","hex":"#2A0B09","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.15,"contrastWhite":18.26,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#09182A","hex":"#09182A","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":1.18,"contrastWhite":17.86,"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"]}]
AI context
{"semanticGroups":["warm orange","dark","dark orange","Matte Black adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","dark theme accents"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/2a1b09.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/matte-black.json","https://www.colorsencyclopedia.com/api/colors/carbon-fiber.json","https://www.colorsencyclopedia.com/api/colors/raisin.json"]}
Harmonies
{"complementary":"#09182A","analogous":["#2A0B09","#282A09"],"triadic":["#092A1B","#1B092A"],"tetradic":["#092A0B","#09182A","#2A0928"],"splitComplementary":["#09282A","#0B092A"],"monochromatic":["#764C19","#2A1B09","#000000"]}
Variants
{"light":"#764C19","dark":"#000000","saturated":"#301C03","desaturated":"#241B0F","pastel":"#865E2D","neon":"#5C3200"}
Nearest named colors
[{"slug":"matte-black","name":"Matte Black","hex":"#1A1A1A","distance":23.366642891095847},{"slug":"carbon-fiber","name":"Carbon Fiber","hex":"#1C1C1C","distance":23.62202362203543},{"slug":"raisin","name":"Raisin","hex":"#242124","distance":28.30194339616981},{"slug":"rubber","name":"Rubber","hex":"#2A2725","distance":30.463092423455635},{"slug":"carbon-black","name":"Carbon Black","hex":"#0C0C0C","distance":33.67491648096547}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #2A1B09

#2A1B09 is classified as a warm orange value with dark visual character. #2A1B09 is visually closest to Matte Black, a named gray color with HEX #1A1A1A.

The RGB channels are 42, 27, and 9, with red carrying the strongest channel weight. In HSL, the hue is 33deg with 65% saturation and 10% lightness, so this page treats it as a moderate-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 0.013, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 23.37, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text1.26:1AA Fail
White text16.67:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: #FFFFFF, #F5F5F5.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #2A1B09 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000001.26:1 · Fail
White text#FFFFFF16.67:1 · AAA

Accessible Alternatives

Black#FFFFFF text · best 21:1#000000
Carbon Black#FFFFFF text · best 19.55:1#0C0C0C
#2A0B09#FFFFFF text · best 18.26:1#2A0B09
#09182A#FFFFFF text · best 17.86:1#09182A
Matte Black#FFFFFF text · best 17.41:1#1A1A1A

Generated Palette

#2A1B09#2A1B09
#09182A#09182A
#2A0B09#2A0B09
#282A09#282A09
#764C19#764C19
Black#000000

Color Harmonies

#09182A#09182A
#2A0B09#2A0B09
#282A09#282A09
#092A1B#092A1B
#1B092A#1B092A

Variants

#764C19#764C19
Black#000000
#301C03#301C03
#241B0F#241B0F
#865E2D#865E2D
#5C3200#5C3200

Nearest Named Colors

Matte Black#1A1A1A
Carbon Fiber#1C1C1C
Raisin#242124
Rubber#2A2725
Carbon Black#0C0C0C

Related HEX Guides

Matte Black colorOpen the nearest named color reference for #1A1A1A.Carbon Fiber colorOpen the nearest named color reference for #1C1C1C.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.#2A1B09 APIOpen the machine-readable JSON record for this HEX value.