HEX atlas value

#990000

#990000 is a warm red HEX color nearest Crimson Red. RGB 153, 0, 0, HSL 0° 100% 30%, luminance 0.0677; view contrast and conversions.

red warm balanced

#990000 Sample readable text

HEX #990000

RGB rgb(153, 0, 0)

HSL hsl(0 100% 30%)

CMYK cmyk(0, 100, 100, 40)

Luminance 0.0677

Contrast Black 2.35:1White 8.92:1

CSS

--color-990000: #990000;
.background-990000 { background-color: #990000; }
.text-990000 { color: #990000; }

HEX meaning and use

About #990000

#990000 is classified as a warm red value with balanced visual character. #990000 is visually closest to Crimson Red, a named red color with HEX #990000.

The RGB channels are 153, 0, and 0, with red carrying the strongest channel weight. In HSL, the hue is 0deg with 100% saturation and 30% lightness, so this page treats it as a high-saturation, dark atlas color rather than a generic swatch.

Practical uses for this HEX value include color conversion, WCAG contrast checks, CSS color tokens, and high-attention visual states. Its luminance is 0.0677, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 0.00, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text2.35:1AA Fail

White text8.92:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: #FFFFFF, #F5F5F5.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #990000 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000002.35:1 · Fail

White text#FFFFFF8.92:1 · AAA

Accessible Alternatives

#3D0000#3D0000 · #FFFFFF text · best 17.53:1 Maroon#800000 · #FFFFFF text · best 10.95:1 Dark Red#8B0000 · #FFFFFF text · best 10.01:1 #881111#881111 · #FFFFFF text · best 9.83:1 Carmine#960018 · #FFFFFF text · best 9.09:1

Generated Palette

Crimson Red#990000

#009999#009999

#99004D#99004D

#994C00#994C00

#F50000#F50000

#3D0000#3D0000

Color Harmonies

#009999#009999

#99004D#99004D

#994C00#994C00

#009900#009900

#000099#000099

Variants

#F50000#F50000

#3D0000#3D0000

Crimson Red#990000

#881111#881111

#EE2B2B#EE2B2B

#C20000#C20000

Nearest Named Colors

Crimson Red#990000

Dark Red#8B0000

Cranberry#9F000F

Carmine#960018

Maroon#800000

Luminance0.0677

Black text2.35:1AA Fail

White text8.92:1AA 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

Structured sections

Color systems

{"hex":"#990000","rgb":[153,0,0],"hsl":[0,100,30],"cmyk":[0,100,100,40],"luminance":0.0677,"contrast":{"black":2.35,"white":8.92}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":2.35,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":8.92,"wcagAA":true,"wcagAAA":true}]

Accessible alternatives

[{"name":"#3D0000","hex":"#3D0000","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.2,"contrastWhite":17.53,"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":"Dark Red","hex":"#8B0000","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.1,"contrastWhite":10.01,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#881111","hex":"#881111","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.14,"contrastWhite":9.83,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Carmine","hex":"#960018","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.31,"contrastWhite":9.09,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]}]

AI context

{"semanticGroups":["warm red","balanced","balanced red","Crimson 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/990000.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/crimson-red.json","https://www.colorsencyclopedia.com/api/colors/dark-red.json","https://www.colorsencyclopedia.com/api/colors/cranberry.json"]}

Harmonies

{"complementary":"#009999","analogous":["#99004D","#994C00"],"triadic":["#009900","#000099"],"tetradic":["#4D9900","#009999","#4C0099"],"splitComplementary":["#00994D","#004C99"],"monochromatic":["#F50000","#990000","#3D0000"]}

Variants

{"light":"#F50000","dark":"#3D0000","saturated":"#990000","desaturated":"#881111","pastel":"#EE2B2B","neon":"#C20000"}

Nearest named colors

[{"slug":"crimson-red","name":"Crimson Red","hex":"#990000","distance":0},{"slug":"dark-red","name":"Dark Red","hex":"#8B0000","distance":14},{"slug":"cranberry","name":"Cranberry","hex":"#9F000F","distance":16.15549442140351},{"slug":"carmine","name":"Carmine","hex":"#960018","distance":24.186773244895647},{"slug":"maroon","name":"Maroon","hex":"#800000","distance":25}]

#990000

CSS

About #990000

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Machine-Readable HEX Data (JSON)

Related HEX Guides