#831C10#831C10

#831C10 is a dark, vivid red. Relative luminance 0.057; OKLCH L 40.1% C 0.140 H 30.6°. Best body text is #FFFFFF at 9.82:1 contrast (WCAG AA passes).

Color values

HEX	#831C10
RGB	rgb(131, 28, 16)
HSL	hsl(6, 78%, 29%)
HSV	hsv(6, 88%, 51%)
CMYK	cmyk(0%, 78.6%, 87.8%, 48.6%)
CIE-LAB	lab(28.63, 42.65, 34.11)
CIE-LCH	lch(28.63, 54.61, 38.65°)
OKLab	oklab(40.11% 0.1205 0.0712)
OKLCH	oklch(40.11% 0.14 30.6)
XYZ	xyz(9.8701, 5.6948, 1.0696)
Luminance	0.0569 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#831C10 #107783

analogous

#83103E #831C10 #835610

triadic

#831C10 #10831C #1C1083

tetradic

#831C10 #3E8310 #107783 #561083

square

#831C10 #3E8310 #107783 #561083

split-complementary

#831C10 #108356 #103E83

monochromatic

#1B0603 #4C1009 #831C10 #BA2817 #E53C29

Accessibility & contrast

On white

9.82

#831C10 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#831C10 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #831C10

9.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##831C10	#FFFFFF	#000000	##FFFFFF
##831C10	1.00	9.82	2.14	9.82
#FFFFFF	9.82	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C350D

Deuteranopia (green-blind)

#564C09

Tritanopia (blue-blind)

#91001B

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #831c10;
/* rgb */ color: rgb(131, 28, 16);
/* oklch */ color: oklch(40.1% 0.140 30.6);

Tailwind

colors: {
  custom: {
    50: '#b06250',
    500: '#831c10',
    950: '#000000',
  },
}

SCSS

$custom: #831c10;
$custom-light: #b06250;
$custom-dark: #000000;

JSON

{
  "hex": "#831c10",
  "rgb": {
    "r": 131,
    "g": 28,
    "b": 16
  },
  "hsl": {
    "h": 6.261,
    "s": 78.231,
    "l": 28.824
  },
  "oklch": {
    "l": 0.40112,
    "c": 0.13997,
    "h": 30.6
  },
  "luminance": 0.05693
}

Semantic roles & 50–950 ramp

primary

#831C10

secondary

#36ABB9

accent

#E1F533

background

#FBF6F4

surface

#F7EBE7

border

#D0C6C3

text

#120502

muted

#817A78

Preview Lab

Preview with #831C10

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

Preview Lab → · Contrast checker → · Palette generator →