#851B18#851B18

#851B18 is a dark, vivid red. Relative luminance 0.058; OKLCH L 40.5% C 0.142 H 27.5°. Best body text is #FFFFFF at 9.69:1 contrast (WCAG AA passes).

Color values

HEX	#851B18
RGB	rgb(133, 27, 24)
HSL	hsl(2, 69%, 31%)
HSV	hsv(2, 82%, 52%)
CMYK	cmyk(0%, 79.7%, 82%, 47.8%)
CIE-LAB	lab(29.00, 43.88, 30.16)
CIE-LCH	lch(29.00, 53.24, 34.50°)
OKLab	oklab(40.49% 0.1258 0.0654)
OKLCH	oklch(40.49% 0.142 27.5)
XYZ	xyz(10.2309, 5.8380, 1.4521)
Luminance	0.0584 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#851B18 #188285

analogous

#85184B #851B18 #855118

triadic

#851B18 #18851B #1B1885

tetradic

#851B18 #4B8518 #188285 #511885

square

#851B18 #4B8518 #188285 #511885

split-complementary

#851B18 #188551 #184B85

monochromatic

#1D0605 #51100F #851B18 #B92621 #DC403C

Accessibility & contrast

On white

9.69

#851B18 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#851B18 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #851B18

9.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##851B18	#FFFFFF	#000000	##FFFFFF
##851B18	1.00	9.69	2.17	9.69
#FFFFFF	9.69	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C3616

Deuteranopia (green-blind)

#564D13

Tritanopia (blue-blind)

#93001C

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #851b18;
/* rgb */ color: rgb(133, 27, 24);
/* oklch */ color: oklch(40.5% 0.142 27.5);

Tailwind

colors: {
  custom: {
    50: '#b16255',
    500: '#851b18',
    950: '#000000',
  },
}

SCSS

$custom: #851b18;
$custom-light: #b16255;
$custom-dark: #000000;

JSON

{
  "hex": "#851b18",
  "rgb": {
    "r": 133,
    "g": 27,
    "b": 24
  },
  "hsl": {
    "h": 1.651,
    "s": 69.427,
    "l": 30.784
  },
  "oklch": {
    "l": 0.40486,
    "c": 0.14174,
    "h": 27.5
  },
  "luminance": 0.05836
}

Semantic roles & 50–950 ramp

primary

#851B18

secondary

#40B6B9

accent

#E7EC3C

background

#FBF6F5

surface

#F7EBE9

border

#D0C6C5

text

#120503

muted

#817A78

Preview Lab

Preview with #851B18

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

Preview Lab → · Contrast checker → · Palette generator →