#851721#851721

#851721 is a dark, vivid red. Relative luminance 0.057; OKLCH L 40.3% C 0.144 H 22.5°. Best body text is #FFFFFF at 9.80:1 contrast (WCAG AA passes).

Color values

HEX	#851721
RGB	rgb(133, 23, 33)
HSL	hsl(355, 71%, 31%)
HSV	hsv(355, 83%, 52%)
CMYK	cmyk(0%, 82.7%, 75.2%, 47.8%)
CIE-LAB	lab(28.67, 45.49, 24.24)
CIE-LCH	lch(28.67, 51.54, 28.05°)
OKLab	oklab(40.28% 0.1329 0.055)
OKLCH	oklch(40.28% 0.144 22.5)
XYZ	xyz(10.2550, 5.7108, 2.0009)
Luminance	0.0571 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#851721 #17857B

analogous

#851758 #851721 #854417

triadic

#851721 #218517 #172185

tetradic

#851721 #588517 #17857B #441785

square

#851721 #588517 #17857B #441785

split-complementary

#851721 #178544 #175885

monochromatic

#1D0507 #510E14 #851721 #B9202E #DD3A48

Accessibility & contrast

On white

9.80

#851721 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#851721 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #851721

9.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##851721	#FFFFFF	#000000	##FFFFFF
##851721	1.00	9.80	2.14	9.80
#FFFFFF	9.80	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A3520

Deuteranopia (green-blind)

#554C1D

Tritanopia (blue-blind)

#93001C

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #851721;
/* rgb */ color: rgb(133, 23, 33);
/* oklch */ color: oklch(40.3% 0.144 22.5);

Tailwind

colors: {
  custom: {
    50: '#b0605c',
    500: '#851721',
    950: '#000000',
  },
}

SCSS

$custom: #851721;
$custom-light: #b0605c;
$custom-dark: #000000;

JSON

{
  "hex": "#851721",
  "rgb": {
    "r": 133,
    "g": 23,
    "b": 33
  },
  "hsl": {
    "h": 354.545,
    "s": 70.513,
    "l": 30.588
  },
  "oklch": {
    "l": 0.40277,
    "c": 0.14386,
    "h": 22.5
  },
  "luminance": 0.05709
}

Semantic roles & 50–950 ramp

primary

#851721

secondary

#3FB9AE

accent

#EDDD3B

background

#FBF6F5

surface

#F6EBE9

border

#D0C6C5

text

#120504

muted

#817A79

Preview Lab

Preview with #851721

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

Preview Lab → · Contrast checker → · Palette generator →