#831D17#831D17

#831D17 is a dark, vivid red. Relative luminance 0.058; OKLCH L 40.3% C 0.138 H 28.4°. Best body text is #FFFFFF at 9.75:1 contrast (WCAG AA passes).

Color values

HEX	#831D17
RGB	rgb(131, 29, 23)
HSL	hsl(3, 70%, 30%)
HSV	hsv(3, 82%, 51%)
CMYK	cmyk(0%, 77.9%, 82.4%, 48.6%)
CIE-LAB	lab(28.82, 42.51, 30.42)
CIE-LCH	lch(28.82, 52.27, 35.59°)
OKLab	oklab(40.27% 0.1215 0.0658)
OKLCH	oklch(40.27% 0.138 28.4)
XYZ	xyz(9.9553, 5.7675, 1.3995)
Luminance	0.0577 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#831D17 #177D83

analogous

#831747 #831D17 #835317

triadic

#831D17 #17831D #1D1783

tetradic

#831D17 #478317 #177D83 #531783

square

#831D17 #478317 #177D83 #531783

split-complementary

#831D17 #178353 #174783

monochromatic

#1B0605 #4F110E #831D17 #B72920 #DC4138

Accessibility & contrast

On white

9.75

#831D17 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#831D17 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #831D17

9.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##831D17	#FFFFFF	#000000	##FFFFFF
##831D17	1.00	9.75	2.15	9.75
#FFFFFF	9.75	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C3615

Deuteranopia (green-blind)

#564C12

Tritanopia (blue-blind)

#91001D

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #831d17;
/* rgb */ color: rgb(131, 29, 23);
/* oklch */ color: oklch(40.3% 0.138 28.4);

Tailwind

colors: {
  custom: {
    50: '#af6255',
    500: '#831d17',
    950: '#000000',
  },
}

SCSS

$custom: #831d17;
$custom-light: #af6255;
$custom-dark: #000000;

JSON

{
  "hex": "#831d17",
  "rgb": {
    "r": 131,
    "g": 29,
    "b": 23
  },
  "hsl": {
    "h": 3.333,
    "s": 70.13,
    "l": 30.196
  },
  "oklch": {
    "l": 0.40272,
    "c": 0.13816,
    "h": 28.4
  },
  "luminance": 0.05766
}

Semantic roles & 50–950 ramp

primary

#831D17

secondary

#3FB1B7

accent

#E3ED3B

background

#FBF6F4

surface

#F6EBE8

border

#D0C6C4

text

#120603

muted

#817A78

Preview Lab

Preview with #831D17

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →