#831D2B#831D2B

#831D2B is a dark, vivid red. Relative luminance 0.059; OKLCH L 40.6% C 0.136 H 18.6°. Best body text is #FFFFFF at 9.65:1 contrast (WCAG AA passes).

Color values

HEX	#831D2B
RGB	rgb(131, 29, 43)
HSL	hsl(352, 64%, 31%)
HSV	hsv(352, 78%, 51%)
CMYK	cmyk(0%, 77.9%, 67.2%, 48.6%)
CIE-LAB	lab(29.11, 43.46, 18.17)
CIE-LCH	lch(29.11, 47.11, 22.69°)
OKLab	oklab(40.58% 0.1291 0.0433)
OKLCH	oklch(40.58% 0.136 18.6)
XYZ	xyz(10.2366, 5.8800, 2.8810)
Luminance	0.0588 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#831D2B #1D8375

analogous

#831D5E #831D2B #83421D

triadic

#831D2B #2B831D #1D2B83

tetradic

#831D2B #5E831D #1D8375 #421D83

square

#831D2B #5E831D #1D8375 #421D83

split-complementary

#831D2B #1D8342 #1D5E83

monochromatic

#1F070A #51121B #831D2B #B5283B #D64559

Accessibility & contrast

On white

9.65

#831D2B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#831D2B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #831D2B

9.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##831D2B	#FFFFFF	#000000	##FFFFFF
##831D2B	1.00	9.65	2.18	9.65
#FFFFFF	9.65	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A372B

Deuteranopia (green-blind)

#544C28

Tritanopia (blue-blind)

#900023

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #831d2b;
/* rgb */ color: rgb(131, 29, 43);
/* oklch */ color: oklch(40.6% 0.136 18.6);

Tailwind

colors: {
  custom: {
    50: '#ae6364',
    500: '#831d2b',
    950: '#000000',
  },
}

SCSS

$custom: #831d2b;
$custom-light: #ae6364;
$custom-dark: #000000;

JSON

{
  "hex": "#831d2b",
  "rgb": {
    "r": 131,
    "g": 29,
    "b": 43
  },
  "hsl": {
    "h": 351.765,
    "s": 63.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.40581,
    "c": 0.13614,
    "h": 18.6
  },
  "luminance": 0.05878
}

Semantic roles & 50–950 ramp

primary

#831D2B

secondary

#46B6A7

accent

#E7D041

background

#FBF6F5

surface

#F6EBEA

border

#D0C6C6

text

#120605

muted

#817A79

Preview Lab

Preview with #831D2B

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

Preview Lab → · Contrast checker → · Palette generator →