#871B21#871B21

#871B21 is a dark, vivid red. Relative luminance 0.060; OKLCH L 41.0% C 0.143 H 23.7°. Best body text is #FFFFFF at 9.51:1 contrast (WCAG AA passes).

Color values

HEX	#871B21
RGB	rgb(135, 27, 33)
HSL	hsl(357, 67%, 32%)
HSV	hsv(357, 80%, 53%)
CMYK	cmyk(0%, 80%, 75.6%, 47.1%)
CIE-LAB	lab(29.53, 44.88, 25.34)
CIE-LCH	lch(29.53, 51.54, 29.45°)
OKLab	oklab(40.99% 0.1307 0.0573)
OKLCH	oklch(40.99% 0.143 23.7)
XYZ	xyz(10.6594, 6.0462, 2.0443)
Luminance	0.0604 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#871B21 #1B8781

analogous

#871B57 #871B21 #874B1B

triadic

#871B21 #21871B #1B2187

tetradic

#871B21 #57871B #1B8781 #4B1B87

square

#871B21 #57871B #1B8781 #4B1B87

split-complementary

#871B21 #1B874B #1B5787

monochromatic

#210708 #541115 #871B21 #BA252D #D9434B

Accessibility & contrast

On white

9.51

#871B21 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#871B21 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #871B21

9.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##871B21	#FFFFFF	#000000	##FFFFFF
##871B21	1.00	9.51	2.21	9.51
#FFFFFF	9.51	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C3720

Deuteranopia (green-blind)

#574E1D

Tritanopia (blue-blind)

#95001F

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #871b21;
/* rgb */ color: rgb(135, 27, 33);
/* oklch */ color: oklch(41.0% 0.143 23.7);

Tailwind

colors: {
  custom: {
    50: '#b2625c',
    500: '#871b21',
    950: '#000000',
  },
}

SCSS

$custom: #871b21;
$custom-light: #b2625c;
$custom-dark: #000000;

JSON

{
  "hex": "#871b21",
  "rgb": {
    "r": 135,
    "g": 27,
    "b": 33
  },
  "hsl": {
    "h": 356.667,
    "s": 66.667,
    "l": 31.765
  },
  "oklch": {
    "l": 0.40989,
    "c": 0.14272,
    "h": 23.7
  },
  "luminance": 0.06045
}

Semantic roles & 50–950 ramp

primary

#871B21

secondary

#44BAB4

accent

#EAE03E

background

#FBF6F5

surface

#F7EBE9

border

#D0C6C5

text

#120604

muted

#817A79

Preview Lab

Preview with #871B21

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

Preview Lab → · Contrast checker → · Palette generator →