#831B18#831B18

#831B18 is a dark, vivid red. Relative luminance 0.057; OKLCH L 40.1% C 0.140 H 27.4°. Best body text is #FFFFFF at 9.84:1 contrast (WCAG AA passes).

Color values

HEX	#831B18
RGB	rgb(131, 27, 24)
HSL	hsl(2, 69%, 30%)
HSV	hsv(2, 82%, 51%)
CMYK	cmyk(0%, 79.4%, 81.7%, 48.6%)
CIE-LAB	lab(28.58, 43.23, 29.60)
CIE-LCH	lch(28.58, 52.39, 34.39°)
OKLab	oklab(40.1% 0.124 0.0643)
OKLCH	oklch(40.1% 0.14 27.4)
XYZ	xyz(9.9181, 5.6767, 1.4375)
Luminance	0.0568 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#831B18 #188083

analogous

#83184B #831B18 #835018

triadic

#831B18 #18831B #1B1883

tetradic

#831B18 #4B8318 #188083 #501883

square

#831B18 #4B8318 #188083 #501883

split-complementary

#831B18 #188350 #184B83

monochromatic

#1C0605 #4F100F #831B18 #B72621 #DB3F3A

Accessibility & contrast

On white

9.84

#831B18 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#831B18 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #831B18

9.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##831B18	#FFFFFF	#000000	##FFFFFF
##831B18	1.00	9.84	2.14	9.84
#FFFFFF	9.84	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B3516

Deuteranopia (green-blind)

#554C13

Tritanopia (blue-blind)

#91001C

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #831b18;
/* rgb */ color: rgb(131, 27, 24);
/* oklch */ color: oklch(40.1% 0.140 27.4);

Tailwind

colors: {
  custom: {
    50: '#af6155',
    500: '#831b18',
    950: '#000000',
  },
}

SCSS

$custom: #831b18;
$custom-light: #af6155;
$custom-dark: #000000;

JSON

{
  "hex": "#831b18",
  "rgb": {
    "r": 131,
    "g": 27,
    "b": 24
  },
  "hsl": {
    "h": 1.682,
    "s": 69.032,
    "l": 30.392
  },
  "oklch": {
    "l": 0.401,
    "c": 0.13967,
    "h": 27.4
  },
  "luminance": 0.05675
}

Semantic roles & 50–950 ramp

primary

#831B18

secondary

#40B4B7

accent

#E7EC3C

background

#FBF6F5

surface

#F6EBE9

border

#D0C6C5

text

#120503

muted

#817A78

Preview Lab

Preview with #831B18

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

Preview Lab → · Contrast checker → · Palette generator →