#831017#831017

#831017 is a dark, vivid red. Relative luminance 0.053; OKLCH L 39.3% C 0.148 H 25.2°. Best body text is #FFFFFF at 10.24:1 contrast (WCAG AA passes).

Color values

HEX	#831017
RGB	rgb(131, 16, 23)
HSL	hsl(356, 78%, 29%)
HSV	hsv(356, 88%, 51%)
CMYK	cmyk(0%, 87.8%, 82.4%, 48.6%)
CIE-LAB	lab(27.46, 46.34, 29.05)
CIE-LCH	lch(27.46, 54.69, 32.08°)
OKLab	oklab(39.27% 0.1335 0.0628)
OKLCH	oklch(39.27% 0.148 25.2)
XYZ	xyz(9.7012, 5.2593, 1.3148)
Luminance	0.0526 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#831017 #10837C

analogous

#831051 #831017 #834310

triadic

#831017 #178310 #101783

tetradic

#831017 #518310 #10837C #431083

square

#831017 #518310 #10837C #431083

split-complementary

#831017 #108343 #105183

monochromatic

#1B0305 #4C090D #831017 #BA1721 #E52934

Accessibility & contrast

On white

10.24

#831017 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#831017 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #831017

10.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##831017	#FFFFFF	#000000	##FFFFFF
##831017	1.00	10.24	2.05	10.24
#FFFFFF	10.24	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#373116

Deuteranopia (green-blind)

#534912

Tritanopia (blue-blind)

#910015

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #831017;
/* rgb */ color: rgb(131, 16, 23);
/* oklch */ color: oklch(39.3% 0.148 25.2);

Tailwind

colors: {
  custom: {
    50: '#b05d54',
    500: '#831017',
    950: '#000000',
  },
}

SCSS

$custom: #831017;
$custom-light: #b05d54;
$custom-dark: #000000;

JSON

{
  "hex": "#831017",
  "rgb": {
    "r": 131,
    "g": 16,
    "b": 23
  },
  "hsl": {
    "h": 356.348,
    "s": 78.231,
    "l": 28.824
  },
  "oklch": {
    "l": 0.39265,
    "c": 0.14756,
    "h": 25.2
  },
  "luminance": 0.05258
}

Semantic roles & 50–950 ramp

primary

#831017

secondary

#36B9B1

accent

#F5E933

background

#FBF5F4

surface

#F7EAE7

border

#D0C6C3

text

#120503

muted

#817978

Preview Lab

Preview with #831017

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

Preview Lab → · Contrast checker → · Palette generator →