#811B2B#811B2B

#811B2B is a dark, vivid red. Relative luminance 0.056; OKLCH L 40.0% C 0.136 H 17.7°. Best body text is #FFFFFF at 9.88:1 contrast (WCAG AA passes).

Color values

HEX	#811B2B
RGB	rgb(129, 27, 43)
HSL	hsl(351, 65%, 31%)
HSV	hsv(351, 79%, 51%)
CMYK	cmyk(0%, 79.1%, 66.7%, 49.4%)
CIE-LAB	lab(28.45, 43.51, 17.25)
CIE-LCH	lch(28.45, 46.81, 21.63°)
OKLab	oklab(40.02% 0.1295 0.0413)
OKLCH	oklch(40.02% 0.136 17.7)
XYZ	xyz(9.8823, 5.6269, 2.8508)
Luminance	0.0563 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#811B2B #1B8171

analogous

#811B5E #811B2B #813E1B

triadic

#811B2B #2B811B #1B2B81

tetradic

#811B2B #5E811B #1B8171 #3E1B81

square

#811B2B #5E811B #1B8171 #3E1B81

split-complementary

#811B2B #1B813E #1B5E81

monochromatic

#1C0609 #4E101A #811B2B #B4263C #D73F57

Accessibility & contrast

On white

9.88

#811B2B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#811B2B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #811B2B

9.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##811B2B	#FFFFFF	#000000	##FFFFFF
##811B2B	1.00	9.88	2.13	9.88
#FFFFFF	9.88	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#38352B

Deuteranopia (green-blind)

#524B28

Tritanopia (blue-blind)

#8E0022

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #811b2b;
/* rgb */ color: rgb(129, 27, 43);
/* oklch */ color: oklch(40.0% 0.136 17.7);

Tailwind

colors: {
  custom: {
    50: '#ac6164',
    500: '#811b2b',
    950: '#000000',
  },
}

SCSS

$custom: #811b2b;
$custom-light: #ac6164;
$custom-dark: #000000;

JSON

{
  "hex": "#811b2b",
  "rgb": {
    "r": 129,
    "g": 27,
    "b": 43
  },
  "hsl": {
    "h": 350.588,
    "s": 65.385,
    "l": 30.588
  },
  "oklch": {
    "l": 0.4002,
    "c": 0.13594,
    "h": 17.7
  },
  "luminance": 0.05625
}

Semantic roles & 50–950 ramp

primary

#811B2B

secondary

#43B5A3

accent

#E8CE3F

background

#FBF6F5

surface

#F6EBEA

border

#D0C6C6

text

#110505

muted

#807A79

Preview Lab

Preview with #811B2B

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

Preview Lab → · Contrast checker → · Palette generator →