#831B31#831B31

#831B31 is a dark, vivid red. Relative luminance 0.058; OKLCH L 40.5% C 0.138 H 14.4°. Best body text is #FFFFFF at 9.69:1 contrast (WCAG AA passes).

Color values

HEX	#831B31
RGB	rgb(131, 27, 49)
HSL	hsl(347, 66%, 31%)
HSV	hsv(347, 79%, 51%)
CMYK	cmyk(0%, 79.4%, 62.6%, 48.6%)
CIE-LAB	lab(28.99, 44.53, 14.04)
CIE-LCH	lch(28.99, 46.69, 17.50°)
OKLab	oklab(40.53% 0.1338 0.0344)
OKLCH	oklch(40.53% 0.138 14.4)
XYZ	xyz(10.3074, 5.8324, 3.4882)
Luminance	0.0583 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#831B31 #1B836D

analogous

#831B65 #831B31 #83391B

triadic

#831B31 #31831B #1B3183

tetradic

#831B31 #65831B #1B836D #391B83

square

#831B31 #65831B #1B836D #391B83

split-complementary

#831B31 #1B8339 #1B6583

monochromatic

#1E060B #50111E #831B31 #B62544 #D84161

Accessibility & contrast

On white

9.69

#831B31 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#831B31 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #831B31

9.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##831B31	#FFFFFF	#000000	##FFFFFF
##831B31	1.00	9.69	2.17	9.69
#FFFFFF	9.69	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#383731

Deuteranopia (green-blind)

#534C2E

Tritanopia (blue-blind)

#900024

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #831b31;
/* rgb */ color: rgb(131, 27, 49);
/* oklch */ color: oklch(40.5% 0.138 14.4);

Tailwind

colors: {
  custom: {
    50: '#ad6268',
    500: '#831b31',
    950: '#000000',
  },
}

SCSS

$custom: #831b31;
$custom-light: #ad6268;
$custom-dark: #000000;

JSON

{
  "hex": "#831b31",
  "rgb": {
    "r": 131,
    "g": 27,
    "b": 49
  },
  "hsl": {
    "h": 347.308,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.40529,
    "c": 0.13811,
    "h": 14.4
  },
  "luminance": 0.05831
}

Semantic roles & 50–950 ramp

primary

#831B31

secondary

#43B69E

accent

#E9C53F

background

#FBF6F6

surface

#F6EBEB

border

#D0C6C6

text

#110606

muted

#807A7A

Preview Lab

Preview with #831B31

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

Preview Lab → · Contrast checker → · Palette generator →