#831B25#831B25

#831B25 is a dark, vivid red. Relative luminance 0.057; OKLCH L 40.3% C 0.138 H 21.3°. Best body text is #FFFFFF at 9.77:1 contrast (WCAG AA passes).

Color values

HEX	#831B25
RGB	rgb(131, 27, 37)
HSL	hsl(354, 66%, 31%)
HSV	hsv(354, 79%, 51%)
CMYK	cmyk(0%, 79.4%, 71.8%, 48.6%)
CIE-LAB	lab(28.76, 43.80, 21.66)
CIE-LCH	lch(28.76, 48.87, 26.31°)
OKLab	oklab(40.29% 0.1288 0.0503)
OKLCH	oklch(40.29% 0.138 21.3)
XYZ	xyz(10.0871, 5.7443, 2.3275)
Luminance	0.0574 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#831B25 #1B8379

analogous

#831B59 #831B25 #83451B

triadic

#831B25 #25831B #1B2583

tetradic

#831B25 #59831B #1B8379 #451B83

square

#831B25 #59831B #1B8379 #451B83

split-complementary

#831B25 #1B8345 #1B5983

monochromatic

#1E0608 #501117 #831B25 #B62533 #D8414F

Accessibility & contrast

On white

9.77

#831B25 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#831B25 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #831B25

9.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##831B25	#FFFFFF	#000000	##FFFFFF
##831B25	1.00	9.77	2.15	9.77
#FFFFFF	9.77	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A3624

Deuteranopia (green-blind)

#544C22

Tritanopia (blue-blind)

#900020

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #831b25;
/* rgb */ color: rgb(131, 27, 37);
/* oklch */ color: oklch(40.3% 0.138 21.3);

Tailwind

colors: {
  custom: {
    50: '#ae625f',
    500: '#831b25',
    950: '#000000',
  },
}

SCSS

$custom: #831b25;
$custom-light: #ae625f;
$custom-dark: #000000;

JSON

{
  "hex": "#831b25",
  "rgb": {
    "r": 131,
    "g": 27,
    "b": 37
  },
  "hsl": {
    "h": 354.231,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.40287,
    "c": 0.13825,
    "h": 21.3
  },
  "luminance": 0.05743
}

Semantic roles & 50–950 ramp

primary

#831B25

secondary

#43B6AB

accent

#E9D83F

background

#FBF6F5

surface

#F6EBE9

border

#D0C6C5

text

#120504

muted

#817A79

Preview Lab

Preview with #831B25

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

Preview Lab → · Contrast checker → · Palette generator →