#831B23#831B23

#831B23 is a dark, vivid red. Relative luminance 0.057; OKLCH L 40.3% C 0.138 H 22.4°. Best body text is #FFFFFF at 9.78:1 contrast (WCAG AA passes).

Color values

HEX	#831B23
RGB	rgb(131, 27, 35)
HSL	hsl(355, 66%, 31%)
HSV	hsv(355, 79%, 51%)
CMYK	cmyk(0%, 79.4%, 73.3%, 48.6%)
CIE-LAB	lab(28.73, 43.70, 22.92)
CIE-LCH	lch(28.73, 49.35, 27.67°)
OKLab	oklab(40.25% 0.128 0.0527)
OKLCH	oklch(40.25% 0.138 22.4)
XYZ	xyz(10.0565, 5.7321, 2.1667)
Luminance	0.0573 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#831B23 #1B837B

analogous

#831B57 #831B23 #83471B

triadic

#831B23 #23831B #1B2383

tetradic

#831B23 #57831B #1B837B #471B83

square

#831B23 #57831B #1B837B #471B83

split-complementary

#831B23 #1B8347 #1B5783

monochromatic

#1E0608 #501115 #831B23 #B62531 #D8414C

Accessibility & contrast

On white

9.78

#831B23 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#831B23 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #831B23

9.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##831B23	#FFFFFF	#000000	##FFFFFF
##831B23	1.00	9.78	2.15	9.78
#FFFFFF	9.78	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A3622

Deuteranopia (green-blind)

#544C20

Tritanopia (blue-blind)

#91001F

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #831b23;
/* rgb */ color: rgb(131, 27, 35);
/* oklch */ color: oklch(40.3% 0.138 22.4);

Tailwind

colors: {
  custom: {
    50: '#ae625e',
    500: '#831b23',
    950: '#000000',
  },
}

SCSS

$custom: #831b23;
$custom-light: #ae625e;
$custom-dark: #000000;

JSON

{
  "hex": "#831b23",
  "rgb": {
    "r": 131,
    "g": 27,
    "b": 35
  },
  "hsl": {
    "h": 355.385,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.40253,
    "c": 0.1384,
    "h": 22.4
  },
  "luminance": 0.05731
}

Semantic roles & 50–950 ramp

primary

#831B23

secondary

#43B6AE

accent

#E9DC3F

background

#FBF6F5

surface

#F6EBE9

border

#D0C6C5

text

#120504

muted

#817A79

Preview Lab

Preview with #831B23

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

Preview Lab → · Contrast checker → · Palette generator →