#57181B#57181B

#57181B is a dark, moderate red. Relative luminance 0.028; OKLCH L 31.3% C 0.093 H 21.6°. Best body text is #FFFFFF at 13.53:1 contrast (WCAG AA passes).

Color values

HEX	#57181B
RGB	rgb(87, 24, 27)
HSL	hsl(357, 57%, 22%)
HSV	hsv(357, 72%, 34%)
CMYK	cmyk(0%, 72.4%, 69%, 65.9%)
CIE-LAB	lab(19.05, 29.19, 14.32)
CIE-LCH	lch(19.05, 32.52, 26.13°)
OKLab	oklab(31.35% 0.0862 0.0342)
OKLCH	oklch(31.35% 0.093 21.6)
XYZ	xyz(4.4554, 2.7593, 1.3347)
Luminance	0.0276 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#57181B #185754

analogous

#57183B #57181B #573518

triadic

#57181B #1B5718 #181B57

tetradic

#57181B #3B5718 #185754 #351857

square

#57181B #3B5718 #185754 #351857

split-complementary

#57181B #185735 #183B57

monochromatic

#180707 #270B0C #57181B #87252A #B73239

Accessibility & contrast

On white

13.53

#57181B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#57181B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #57181B

13.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##57181B	#FFFFFF	#000000	##FFFFFF
##57181B	1.00	13.53	1.55	13.53
#FFFFFF	13.53	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#29261B

Deuteranopia (green-blind)

#393319

Tritanopia (blue-blind)

#60091A

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #57181b;
/* rgb */ color: rgb(87, 24, 27);
/* oklch */ color: oklch(31.3% 0.093 21.6);

Tailwind

colors: {
  custom: {
    50: '#8b5957',
    500: '#57181b',
    950: '#000000',
  },
}

SCSS

$custom: #57181b;
$custom-light: #8b5957;
$custom-dark: #000000;

JSON

{
  "hex": "#57181b",
  "rgb": {
    "r": 87,
    "g": 24,
    "b": 27
  },
  "hsl": {
    "h": 357.143,
    "s": 56.757,
    "l": 21.765
  },
  "oklch": {
    "l": 0.31346,
    "c": 0.09279,
    "h": 21.6
  },
  "luminance": 0.02759
}

Semantic roles & 50–950 ramp

primary

#57181B

secondary

#3D8E8A

accent

#E0D948

background

#F9F5F5

surface

#F1E9E9

border

#CBC5C5

text

#0D0403

muted

#7E7978

Preview Lab

Preview with #57181B

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

Preview Lab → · Contrast checker → · Palette generator →