#831E1B#831E1B

#831E1B is a dark, vivid red. Relative luminance 0.058; OKLCH L 40.4% C 0.137 H 27.1°. Best body text is #FFFFFF at 9.69:1 contrast (WCAG AA passes).

Color values

HEX	#831E1B
RGB	rgb(131, 30, 27)
HSL	hsl(2, 66%, 31%)
HSV	hsv(2, 79%, 51%)
CMYK	cmyk(0%, 77.1%, 79.4%, 48.6%)
CIE-LAB	lab(28.99, 42.30, 28.23)
CIE-LCH	lch(28.99, 50.85, 33.72°)
OKLab	oklab(40.42% 0.1217 0.0623)
OKLCH	oklch(40.42% 0.137 27.1)
XYZ	xyz(10.0234, 5.8345, 1.6351)
Luminance	0.0583 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#831E1B #1B8083

analogous

#831B4C #831E1B #83521B

triadic

#831E1B #1B831E #1E1B83

tetradic

#831E1B #4C831B #1B8083 #521B83

square

#831E1B #4C831B #1B8083 #521B83

split-complementary

#831E1B #1B8352 #1B4C83

monochromatic

#1E0706 #501211 #831E1B #B62A25 #D84541

Accessibility & contrast

On white

9.69

#831E1B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#831E1B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #831E1B

9.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##831E1B	#FFFFFF	#000000	##FFFFFF
##831E1B	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)

#3D361A

Deuteranopia (green-blind)

#564C17

Tritanopia (blue-blind)

#91001F

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #831e1b;
/* rgb */ color: rgb(131, 30, 27);
/* oklch */ color: oklch(40.4% 0.137 27.1);

Tailwind

colors: {
  custom: {
    50: '#af6358',
    500: '#831e1b',
    950: '#000000',
  },
}

SCSS

$custom: #831e1b;
$custom-light: #af6358;
$custom-dark: #000000;

JSON

{
  "hex": "#831e1b",
  "rgb": {
    "r": 131,
    "g": 30,
    "b": 27
  },
  "hsl": {
    "h": 1.731,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.40416,
    "c": 0.13672,
    "h": 27.1
  },
  "luminance": 0.05833
}

Semantic roles & 50–950 ramp

primary

#831E1B

secondary

#43B3B6

accent

#E4E93F

background

#FBF6F5

surface

#F6EBE9

border

#D0C6C5

text

#120603

muted

#817A78

Preview Lab

Preview with #831E1B

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

Preview Lab → · Contrast checker → · Palette generator →