#831F37#831F37

#831F37 is a dark, vivid red. Relative luminance 0.061; OKLCH L 41.0% C 0.135 H 11.7°. Best body text is #FFFFFF at 9.48:1 contrast (WCAG AA passes).

Color values

HEX	#831F37
RGB	rgb(131, 31, 55)
HSL	hsl(346, 62%, 32%)
HSV	hsv(346, 76%, 51%)
CMYK	cmyk(0%, 76.3%, 58%, 48.6%)
CIE-LAB	lab(29.62, 43.59, 10.90)
CIE-LCH	lch(29.62, 44.93, 14.05°)
OKLab	oklab(41.04% 0.1318 0.0273)
OKLCH	oklch(41.04% 0.135 11.7)
XYZ	xyz(10.5407, 6.0826, 4.2327)
Luminance	0.0608 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#831F37 #1F836B

analogous

#831F69 #831F37 #83391F

triadic

#831F37 #37831F #1F3783

tetradic

#831F37 #69831F #1F836B #391F83

square

#831F37 #69831F #1F836B #391F83

split-complementary

#831F37 #1F8339 #1F6983

monochromatic

#20080D #521322 #831F37 #B42B4C #D4496A

Accessibility & contrast

On white

9.48

#831F37 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#831F37 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #831F37

9.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##831F37	#FFFFFF	#000000	##FFFFFF
##831F37	1.00	9.48	2.22	9.48
#FFFFFF	9.48	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#393937

Deuteranopia (green-blind)

#534D34

Tritanopia (blue-blind)

#900229

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #831f37;
/* rgb */ color: rgb(131, 31, 55);
/* oklch */ color: oklch(41.0% 0.135 11.7);

Tailwind

colors: {
  custom: {
    50: '#ad646d',
    500: '#831f37',
    950: '#000000',
  },
}

SCSS

$custom: #831f37;
$custom-light: #ad646d;
$custom-dark: #000000;

JSON

{
  "hex": "#831f37",
  "rgb": {
    "r": 131,
    "g": 31,
    "b": 55
  },
  "hsl": {
    "h": 345.6,
    "s": 61.728,
    "l": 31.765
  },
  "oklch": {
    "l": 0.41043,
    "c": 0.13459,
    "h": 11.7
  },
  "luminance": 0.06081
}

Semantic roles & 50–950 ramp

primary

#831F37

secondary

#48B69B

accent

#E5BE43

background

#FBF6F6

surface

#F6EBEB

border

#D0C6C6

text

#110607

muted

#807A7A

Preview Lab

Preview with #831F37

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

Preview Lab → · Contrast checker → · Palette generator →