#831B33#831B33

#831B33 is a dark, vivid red. Relative luminance 0.058; OKLCH L 40.6% C 0.138 H 13.2°. Best body text is #FFFFFF at 9.68:1 contrast (WCAG AA passes).

Color values

HEX	#831B33
RGB	rgb(131, 27, 51)
HSL	hsl(346, 66%, 31%)
HSV	hsv(346, 79%, 51%)
CMYK	cmyk(0%, 79.4%, 61.1%, 48.6%)
CIE-LAB	lab(29.03, 44.67, 12.77)
CIE-LCH	lch(29.03, 46.46, 15.95°)
OKLab	oklab(40.58% 0.1346 0.0315)
OKLCH	oklch(40.58% 0.138 13.2)
XYZ	xyz(10.3506, 5.8497, 3.7154)
Luminance	0.0585 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#831B33 #1B836B

analogous

#831B67 #831B33 #83371B

triadic

#831B33 #33831B #1B3383

tetradic

#831B33 #67831B #1B836B #371B83

square

#831B33 #67831B #1B836B #371B83

split-complementary

#831B33 #1B8337 #1B6783

monochromatic

#1E060B #50111F #831B33 #B62547 #D84164

Accessibility & contrast

On white

9.68

#831B33 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#831B33 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #831B33

9.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##831B33	#FFFFFF	#000000	##FFFFFF
##831B33	1.00	9.68	2.17	9.68
#FFFFFF	9.68	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#383733

Deuteranopia (green-blind)

#524C30

Tritanopia (blue-blind)

#900025

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #831b33;
/* rgb */ color: rgb(131, 27, 51);
/* oklch */ color: oklch(40.6% 0.138 13.2);

Tailwind

colors: {
  custom: {
    50: '#ad626a',
    500: '#831b33',
    950: '#000000',
  },
}

SCSS

$custom: #831b33;
$custom-light: #ad626a;
$custom-dark: #000000;

JSON

{
  "hex": "#831b33",
  "rgb": {
    "r": 131,
    "g": 27,
    "b": 51
  },
  "hsl": {
    "h": 346.154,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.40577,
    "c": 0.13825,
    "h": 13.2
  },
  "luminance": 0.05848
}

Semantic roles & 50–950 ramp

primary

#831B33

secondary

#43B69C

accent

#E9C23F

background

#FBF6F6

surface

#F6EBEB

border

#D0C6C6

text

#110606

muted

#807A7A

Preview Lab

Preview with #831B33

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

Preview Lab → · Contrast checker → · Palette generator →