#831B2D#831B2D

#831B2D is a dark, vivid red. Relative luminance 0.058; OKLCH L 40.4% C 0.138 H 16.8°. Best body text is #FFFFFF at 9.72:1 contrast (WCAG AA passes).

Color values

HEX	#831B2D
RGB	rgb(131, 27, 45)
HSL	hsl(350, 66%, 31%)
HSV	hsv(350, 79%, 51%)
CMYK	cmyk(0%, 79.4%, 65.6%, 48.6%)
CIE-LAB	lab(28.90, 44.27, 16.59)
CIE-LCH	lch(28.90, 47.27, 20.55°)
OKLab	oklab(40.44% 0.1321 0.0399)
OKLCH	oklch(40.44% 0.138 16.8)
XYZ	xyz(10.2267, 5.8002, 3.0632)
Luminance	0.0580 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#831B2D #1B8371

analogous

#831B61 #831B2D #833D1B

triadic

#831B2D #2D831B #1B2D83

tetradic

#831B2D #61831B #1B8371 #3D1B83

square

#831B2D #61831B #1B8371 #3D1B83

split-complementary

#831B2D #1B833D #1B6183

monochromatic

#1E060A #50111C #831B2D #B6253E #D8415B

Accessibility & contrast

On white

9.72

#831B2D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#831B2D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #831B2D

9.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##831B2D	#FFFFFF	#000000	##FFFFFF
##831B2D	1.00	9.72	2.16	9.72
#FFFFFF	9.72	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#39362D

Deuteranopia (green-blind)

#534C2A

Tritanopia (blue-blind)

#900023

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #831b2d;
/* rgb */ color: rgb(131, 27, 45);
/* oklch */ color: oklch(40.4% 0.138 16.8);

Tailwind

colors: {
  custom: {
    50: '#ae6265',
    500: '#831b2d',
    950: '#000000',
  },
}

SCSS

$custom: #831b2d;
$custom-light: #ae6265;
$custom-dark: #000000;

JSON

{
  "hex": "#831b2d",
  "rgb": {
    "r": 131,
    "g": 27,
    "b": 45
  },
  "hsl": {
    "h": 349.615,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.40441,
    "c": 0.13798,
    "h": 16.8
  },
  "luminance": 0.05799
}

Semantic roles & 50–950 ramp

primary

#831B2D

secondary

#43B6A3

accent

#E9CB3F

background

#FBF6F6

surface

#F6EBEB

border

#D0C6C6

text

#110605

muted

#807A7A

Preview Lab

Preview with #831B2D

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

Preview Lab → · Contrast checker → · Palette generator →