#831C2A#831C2A

#831C2A is a dark, vivid red. Relative luminance 0.058; OKLCH L 40.5% C 0.137 H 18.8°. Best body text is #FFFFFF at 9.70:1 contrast (WCAG AA passes).

Color values

HEX	#831C2A
RGB	rgb(131, 28, 42)
HSL	hsl(352, 65%, 31%)
HSV	hsv(352, 79%, 51%)
CMYK	cmyk(0%, 78.6%, 67.9%, 48.6%)
CIE-LAB	lab(28.97, 43.75, 18.65)
CIE-LCH	lch(28.97, 47.56, 23.09°)
OKLab	oklab(40.47% 0.1298 0.0443)
OKLCH	oklch(40.47% 0.137 18.8)
XYZ	xyz(10.1944, 5.8245, 2.7775)
Luminance	0.0582 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#831C2A #1C8375

analogous

#831C5D #831C2A #83411C

triadic

#831C2A #2A831C #1C2A83

tetradic

#831C2A #5D831C #1C8375 #411C83

square

#831C2A #5D831C #1C8375 #411C83

split-complementary

#831C2A #1C8341 #1C5D83

monochromatic

#1E060A #51111A #831C2A #B5273A #D74357

Accessibility & contrast

On white

9.70

#831C2A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#831C2A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #831C2A

9.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##831C2A	#FFFFFF	#000000	##FFFFFF
##831C2A	1.00	9.70	2.16	9.70
#FFFFFF	9.70	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A362A

Deuteranopia (green-blind)

#544C27

Tritanopia (blue-blind)

#900022

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #831c2a;
/* rgb */ color: rgb(131, 28, 42);
/* oklch */ color: oklch(40.5% 0.137 18.8);

Tailwind

colors: {
  custom: {
    50: '#ae6263',
    500: '#831c2a',
    950: '#000000',
  },
}

SCSS

$custom: #831c2a;
$custom-light: #ae6263;
$custom-dark: #000000;

JSON

{
  "hex": "#831c2a",
  "rgb": {
    "r": 131,
    "g": 28,
    "b": 42
  },
  "hsl": {
    "h": 351.845,
    "s": 64.78,
    "l": 31.176
  },
  "oklch": {
    "l": 0.40469,
    "c": 0.13709,
    "h": 18.8
  },
  "luminance": 0.05823
}

Semantic roles & 50–950 ramp

primary

#831C2A

secondary

#45B6A7

accent

#E8D140

background

#FBF6F5

surface

#F6EBEA

border

#D0C6C6

text

#120605

muted

#817A79

Preview Lab

Preview with #831C2A

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

Preview Lab → · Contrast checker → · Palette generator →