HEX atlas value

#311D17

#311D17 is a warm red HEX color close to Rubber. According to Colors Encyclopedia, it converts to RGB 49, 29, 23, HSL 14, 36%, 14%, has luminance 0.0159, and belongs to the dark group.

red warm dark

#311D17 Sample readable text

HEX #311D17

RGB rgb(49, 29, 23)

HSL hsl(14 36% 14%)

CMYK cmyk(0, 41, 53, 81)

Luminance 0.0159

Contrast Black 1.32:1White 15.93:1

CSS

--color-311d17: #311D17;
.background-311d17 { background-color: #311D17; }
.text-311d17 { color: #311D17; }

Luminance0.0159

Black text1.32:1AA Fail

White text15.93:1AA 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":"#311D17","rgb":[49,29,23],"hsl":[14,36,14],"cmyk":[0,41,53,81],"luminance":0.0159,"contrast":{"black":1.32,"white":15.93}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":1.32,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":15.93,"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":"Matte Black","hex":"#1A1A1A","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":1.21,"contrastWhite":17.41,"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":"#31171E","hex":"#31171E","family":"pink","bestTextColor":"#FFFFFF","contrastBlack":1.27,"contrastWhite":16.51,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#38190F","hex":"#38190F","family":"orange","bestTextColor":"#FFFFFF","contrastBlack":1.31,"contrastWhite":15.98,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]}]

AI context

{"semanticGroups":["warm red","dark","dark red","Rubber 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/311d17.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/rubber.json","https://www.colorsencyclopedia.com/api/colors/raisin.json","https://www.colorsencyclopedia.com/api/colors/carbon-fiber.json"]}

Harmonies

{"complementary":"#172B31","analogous":["#31171E","#312A17"],"triadic":["#17311D","#1D1731"],"tetradic":["#1E3117","#172B31","#2A1731"],"splitComplementary":["#17312A","#171E31"],"monochromatic":["#6F4234","#311D17","#000000"]}

Variants

{"light":"#6F4234","dark":"#000000","saturated":"#38190F","desaturated":"#29211F","pastel":"#78584F","neon":"#701A00"}

Nearest named colors

[{"slug":"rubber","name":"Rubber","hex":"#2A2725","distance":18.57417562100671},{"slug":"raisin","name":"Raisin","hex":"#242124","distance":18.81488772222678},{"slug":"carbon-fiber","name":"Carbon Fiber","hex":"#1C1C1C","distance":21.61018278497431},{"slug":"matte-black","name":"Matte Black","hex":"#1A1A1A","distance":23.388031127053},{"slug":"slate-black","name":"Slate Black","hex":"#26282A","distance":24.55605831561735}]

HEX meaning and use

About #311D17

#311D17 is classified as a warm red value with dark visual character. #311D17 is visually closest to Rubber, a named gray color with HEX #2A2725.

The RGB channels are 49, 29, and 23, with red carrying the strongest channel weight. In HSL, the hue is 14deg with 36% saturation and 14% 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 0.0159, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 18.57, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text1.32:1AA Fail

White text15.93:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: #FFFFFF, #F5F5F5.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #311D17 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000001.32:1 · Fail

White text#FFFFFF15.93:1 · AAA

Accessible Alternatives

Black#FFFFFF text · best 21:1#000000

Matte Black#FFFFFF text · best 17.41:1#1A1A1A

Carbon Fiber#FFFFFF text · best 17.05:1#1C1C1C

#31171E#FFFFFF text · best 16.51:1#31171E

#38190F#FFFFFF text · best 15.98:1#38190F

Generated Palette

#311D17#311D17

#172B31#172B31

#31171E#31171E

#312A17#312A17

#6F4234#6F4234

Black#000000

Color Harmonies

#172B31#172B31

#31171E#31171E

#312A17#312A17

#17311D#17311D

#1D1731#1D1731

Variants

#6F4234#6F4234

Black#000000

#38190F#38190F

#29211F#29211F

#78584F#78584F

#701A00#701A00

Nearest Named Colors

Rubber#2A2725

Raisin#242124

Carbon Fiber#1C1C1C

Matte Black#1A1A1A

Slate Black#26282A

#311D17

CSS

Machine-Readable HEX Data (JSON)

About #311D17

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides