#831B1E#831B1E

#831B1E is a dark, vivid red. Relative luminance 0.057; OKLCH L 40.2% C 0.139 H 24.8°. Best body text is #FFFFFF at 9.81:1 contrast (WCAG AA passes).

Color values

HEX	#831B1E
RGB	rgb(131, 27, 30)
HSL	hsl(358, 66%, 31%)
HSV	hsv(358, 79%, 51%)
CMYK	cmyk(0%, 79.4%, 77.1%, 48.6%)
CIE-LAB	lab(28.65, 43.47, 26.01)
CIE-LCH	lch(28.65, 50.66, 30.90°)
OKLab	oklab(40.18% 0.1261 0.0583)
OKLCH	oklch(40.18% 0.139 24.8)
XYZ	xyz(9.9875, 5.7045, 1.8032)
Luminance	0.0570 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#831B1E #1B8380

analogous

#831B52 #831B1E #834C1B

triadic

#831B1E #1E831B #1B1E83

tetradic

#831B1E #52831B #1B8380 #4C1B83

square

#831B1E #52831B #1B8380 #4C1B83

split-complementary

#831B1E #1B834C #1B5283

monochromatic

#1E0607 #501112 #831B1E #B6252A #D84145

Accessibility & contrast

On white

9.81

#831B1E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#831B1E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #831B1E

9.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##831B1E	#FFFFFF	#000000	##FFFFFF
##831B1E	1.00	9.81	2.14	9.81
#FFFFFF	9.81	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B351D

Deuteranopia (green-blind)

#554C1A

Tritanopia (blue-blind)

#91001D

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #831b1e;
/* rgb */ color: rgb(131, 27, 30);
/* oklch */ color: oklch(40.2% 0.139 24.8);

Tailwind

colors: {
  custom: {
    50: '#af615a',
    500: '#831b1e',
    950: '#000000',
  },
}

SCSS

$custom: #831b1e;
$custom-light: #af615a;
$custom-dark: #000000;

JSON

{
  "hex": "#831b1e",
  "rgb": {
    "r": 131,
    "g": 27,
    "b": 30
  },
  "hsl": {
    "h": 358.269,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.40177,
    "c": 0.13891,
    "h": 24.8
  },
  "luminance": 0.05703
}

Semantic roles & 50–950 ramp

primary

#831B1E

secondary

#43B6B3

accent

#E9E43F

background

#FBF6F5

surface

#F6EBE9

border

#D0C6C5

text

#120503

muted

#817A78

Preview Lab

Preview with #831B1E

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

Preview Lab → · Contrast checker → · Palette generator →