#831D1D#831D1D

#831D1D is a dark, vivid red. Relative luminance 0.058; OKLCH L 40.3% C 0.137 H 25.9°. Best body text is #FFFFFF at 9.73:1 contrast (WCAG AA passes).

Color values

HEX	#831D1D
RGB	rgb(131, 29, 29)
HSL	hsl(0, 64%, 31%)
HSV	hsv(0, 78%, 51%)
CMYK	cmyk(0%, 77.9%, 77.9%, 48.6%)
CIE-LAB	lab(28.89, 42.74, 26.89)
CIE-LCH	lch(28.89, 50.50, 32.18°)
OKLab	oklab(40.35% 0.1235 0.06)
OKLCH	oklch(40.35% 0.137 25.9)
XYZ	xyz(10.0224, 5.7943, 1.7528)
Luminance	0.0579 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#831D1D #1D8383

analogous

#831D50 #831D1D #83501D

triadic

#831D1D #1D831D #1D1D83

tetradic

#831D1D #50831D #1D8383 #501D83

square

#831D1D #50831D #1D8383 #501D83

split-complementary

#831D1D #1D8350 #1D5083

monochromatic

#1F0707 #511212 #831D1D #B52828 #D64545

Accessibility & contrast

On white

9.73

#831D1D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#831D1D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #831D1D

9.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##831D1D	#FFFFFF	#000000	##FFFFFF
##831D1D	1.00	9.73	2.16	9.73
#FFFFFF	9.73	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C361C

Deuteranopia (green-blind)

#554C19

Tritanopia (blue-blind)

#91001E

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #831d1d;
/* rgb */ color: rgb(131, 29, 29);
/* oklch */ color: oklch(40.3% 0.137 25.9);

Tailwind

colors: {
  custom: {
    50: '#af6259',
    500: '#831d1d',
    950: '#000000',
  },
}

SCSS

$custom: #831d1d;
$custom-light: #af6259;
$custom-dark: #000000;

JSON

{
  "hex": "#831d1d",
  "rgb": {
    "r": 131,
    "g": 29,
    "b": 29
  },
  "hsl": {
    "h": 0,
    "s": 63.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.40346,
    "c": 0.13732,
    "h": 25.9
  },
  "luminance": 0.05793
}

Semantic roles & 50–950 ramp

primary

#831D1D

secondary

#46B6B6

accent

#E7E741

background

#FBF6F5

surface

#F6EBE9

border

#D0C6C5

text

#120603

muted

#817A78

Preview Lab

Preview with #831D1D

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

Preview Lab → · Contrast checker → · Palette generator →