HEX atlas value

#521A0A

#521A0A is a warm red HEX color close to Oxblood. According to Colors Encyclopedia, it converts to RGB 82, 26, 10, HSL 13, 78%, 18%, has luminance 0.0255, and belongs to the dark group.

red warm dark

#521A0A Sample readable text

HEX #521A0A

RGB rgb(82, 26, 10)

HSL hsl(13 78% 18%)

CMYK cmyk(0, 68, 88, 68)

Luminance 0.0255

Contrast Black 1.51:1White 13.91:1

CSS

--color-521a0a: #521A0A;
.background-521a0a { background-color: #521A0A; }
.text-521a0a { color: #521A0A; }

Luminance0.0255

Black text1.51:1AA Fail

White text13.91:1AA 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

Structured sections

Color systems

{"hex":"#521A0A","rgb":[82,26,10],"hsl":[13,78,18],"cmyk":[0,68,88,68],"luminance":0.0255,"contrast":{"black":1.51,"white":13.91}}

WCAG

{"AA":["#FFFFFF","#F5F5F5"],"AAA":["#FFFFFF","#F5F5F5"]}

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":1.51,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":13.91,"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":"Oxblood","hex":"#4A0000","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.29,"contrastWhite":16.25,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#520A1E","hex":"#520A1E","family":"pink","bestTextColor":"#FFFFFF","contrastBlack":1.42,"contrastWhite":14.79,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#481F14","hex":"#481F14","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.48,"contrastWhite":14.17,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#5C1400","hex":"#5C1400","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.56,"contrastWhite":13.5,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]}]

AI context

{"semanticGroups":["warm red","dark","dark red","Oxblood 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/521a0a.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/oxblood.json","https://www.colorsencyclopedia.com/api/colors/merlot.json","https://www.colorsencyclopedia.com/api/colors/espresso.json"]}

Harmonies

{"complementary":"#0A4252","analogous":["#520A1E","#523D0A"],"triadic":["#0A521A","#1A0A52"],"tetradic":["#1E520A","#0A4252","#3D0A52"],"splitComplementary":["#0A523D","#0A1E52"],"monochromatic":["#A33314","#521A0A","#000000"]}

Variants

{"light":"#A33314","dark":"#000000","saturated":"#5C1400","desaturated":"#481F14","pastel":"#B34729","neon":"#851D00"}

Nearest named colors

[{"slug":"oxblood","name":"Oxblood","hex":"#4A0000","distance":28.982753492378876},{"slug":"merlot","name":"Merlot","hex":"#541E2E","distance":36.27671429443411},{"slug":"espresso","name":"Espresso","hex":"#4B3621","distance":36.90528417449187},{"slug":"garnet-red","name":"Garnet Red","hex":"#6E1F26","distance":39.91240408695021},{"slug":"pine-bark","name":"Pine Bark","hex":"#4A3728","distance":42.485291572496}]

HEX meaning and use

About #521A0A

#521A0A is classified as a warm red value with dark visual character. #521A0A is visually closest to Oxblood, a named red color with HEX #4A0000.

The RGB channels are 82, 26, and 10, with red carrying the strongest channel weight. In HSL, the hue is 13deg with 78% saturation and 18% 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 0.0255, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 28.98, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text1.51:1AA Fail

White text13.91:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: #FFFFFF, #F5F5F5.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #521A0A needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000001.51:1 · Fail

White text#FFFFFF13.91:1 · AAA

Accessible Alternatives

Black#FFFFFF text · best 21:1#000000

Oxblood#FFFFFF text · best 16.25:1#4A0000

#520A1E#FFFFFF text · best 14.79:1#520A1E

#481F14#FFFFFF text · best 14.17:1#481F14

#5C1400#FFFFFF text · best 13.5:1#5C1400

Generated Palette

#521A0A#521A0A

#0A4252#0A4252

#520A1E#520A1E

#523D0A#523D0A

#A33314#A33314

Black#000000

Color Harmonies

#0A4252#0A4252

#520A1E#520A1E

#523D0A#523D0A

#0A521A#0A521A

#1A0A52#1A0A52

Variants

#A33314#A33314

Black#000000

#5C1400#5C1400

#481F14#481F14

#B34729#B34729

#851D00#851D00

Nearest Named Colors

Oxblood#4A0000

Merlot#541E2E

Espresso#4B3621

Garnet Red#6E1F26

Pine Bark#4A3728

#521A0A

CSS

Machine-Readable HEX Data (JSON)

About #521A0A

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides