#851B1D#851B1D

#851B1D is a dark, vivid red. Relative luminance 0.059; OKLCH L 40.5% C 0.141 H 25.4°. Best body text is #FFFFFF at 9.67:1 contrast (WCAG AA passes).

Color values

HEX	#851B1D
RGB	rgb(133, 27, 29)
HSL	hsl(359, 66%, 31%)
HSV	hsv(359, 80%, 52%)
CMYK	cmyk(0%, 79.7%, 78.2%, 47.8%)
CIE-LAB	lab(29.06, 44.07, 27.20)
CIE-LCH	lch(29.06, 51.79, 31.68°)
OKLab	oklab(40.55% 0.1275 0.0605)
OKLCH	oklch(40.55% 0.141 25.4)
XYZ	xyz(10.2878, 5.8607, 1.7517)
Luminance	0.0586 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#851B1D #1B8583

analogous

#851B52 #851B1D #854E1B

triadic

#851B1D #1D851B #1B1D85

tetradic

#851B1D #52851B #1B8583 #4E1B85

square

#851B1D #52851B #1B8583 #4E1B85

split-complementary

#851B1D #1B854E #1B5285

monochromatic

#1F0607 #521112 #851B1D #B82528 #D94245

Accessibility & contrast

On white

9.67

#851B1D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#851B1D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #851B1D

9.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##851B1D	#FFFFFF	#000000	##FFFFFF
##851B1D	1.00	9.67	2.17	9.67
#FFFFFF	9.67	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C361C

Deuteranopia (green-blind)

#564D19

Tritanopia (blue-blind)

#93001D

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #851b1d;
/* rgb */ color: rgb(133, 27, 29);
/* oklch */ color: oklch(40.5% 0.141 25.4);

Tailwind

colors: {
  custom: {
    50: '#b16259',
    500: '#851b1d',
    950: '#000000',
  },
}

SCSS

$custom: #851b1d;
$custom-light: #b16259;
$custom-dark: #000000;

JSON

{
  "hex": "#851b1d",
  "rgb": {
    "r": 133,
    "g": 27,
    "b": 29
  },
  "hsl": {
    "h": 358.868,
    "s": 66.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.40548,
    "c": 0.1411,
    "h": 25.4
  },
  "luminance": 0.05859
}

Semantic roles & 50–950 ramp

primary

#851B1D

secondary

#44B8B6

accent

#E9E63F

background

#FBF6F5

surface

#F7EBE9

border

#D0C6C5

text

#120603

muted

#817A78

Preview Lab

Preview with #851B1D

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

Preview Lab → · Contrast checker → · Palette generator →