#831B28#831B28

#831B28 is a dark, vivid red. Relative luminance 0.058; OKLCH L 40.3% C 0.138 H 19.7°. Best body text is #FFFFFF at 9.76:1 contrast (WCAG AA passes).

Color values

HEX	#831B28
RGB	rgb(131, 27, 40)
HSL	hsl(353, 66%, 31%)
HSV	hsv(353, 79%, 51%)
CMYK	cmyk(0%, 79.4%, 69.5%, 48.6%)
CIE-LAB	lab(28.81, 43.97, 19.77)
CIE-LCH	lch(28.81, 48.21, 24.21°)
OKLab	oklab(40.34% 0.13 0.0465)
OKLCH	oklch(40.34% 0.138 19.7)
XYZ	xyz(10.1361, 5.7639, 2.5859)
Luminance	0.0576 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#831B28 #1B8376

analogous

#831B5C #831B28 #83421B

triadic

#831B28 #28831B #1B2883

tetradic

#831B28 #5C831B #1B8376 #421B83

square

#831B28 #5C831B #1B8376 #421B83

split-complementary

#831B28 #1B8342 #1B5C83

monochromatic

#1E0609 #501119 #831B28 #B62537 #D84154

Accessibility & contrast

On white

9.76

#831B28 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#831B28 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #831B28

9.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##831B28	#FFFFFF	#000000	##FFFFFF
##831B28	1.00	9.76	2.15	9.76
#FFFFFF	9.76	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A3628

Deuteranopia (green-blind)

#544C25

Tritanopia (blue-blind)

#900021

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #831b28;
/* rgb */ color: rgb(131, 27, 40);
/* oklch */ color: oklch(40.3% 0.138 19.7);

Tailwind

colors: {
  custom: {
    50: '#ae6261',
    500: '#831b28',
    950: '#000000',
  },
}

SCSS

$custom: #831b28;
$custom-light: #ae6261;
$custom-dark: #000000;

JSON

{
  "hex": "#831b28",
  "rgb": {
    "r": 131,
    "g": 27,
    "b": 40
  },
  "hsl": {
    "h": 352.5,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.40341,
    "c": 0.13808,
    "h": 19.7
  },
  "luminance": 0.05762
}

Semantic roles & 50–950 ramp

primary

#831B28

secondary

#43B6A8

accent

#E9D43F

background

#FBF6F5

surface

#F6EBE9

border

#D0C6C5

text

#120605

muted

#817A79

Preview Lab

Preview with #831B28

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

Preview Lab → · Contrast checker → · Palette generator →