#571B11#571B11

#571B11 is a dark, moderate red. Relative luminance 0.029; OKLCH L 31.6% C 0.091 H 31.8°. Best body text is #FFFFFF at 13.37:1 contrast (WCAG AA passes).

Color values

HEX	#571B11
RGB	rgb(87, 27, 17)
HSL	hsl(9, 67%, 20%)
HSV	hsv(9, 80%, 34%)
CMYK	cmyk(0%, 69%, 80.5%, 65.9%)
CIE-LAB	lab(19.44, 27.11, 21.39)
CIE-LCH	lch(19.44, 34.53, 38.27°)
OKLab	oklab(31.58% 0.0774 0.0481)
OKLCH	oklch(31.58% 0.091 31.8)
XYZ	xyz(4.4241, 2.8512, 0.8476)
Luminance	0.0285 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#571B11 #114D57

analogous

#57112A #571B11 #573E11

triadic

#571B11 #11571B #1B1157

tetradic

#571B11 #2A5711 #114D57 #3E1157

square

#571B11 #2A5711 #114D57 #3E1157

split-complementary

#571B11 #11573E #112A57

monochromatic

#1A0805 #240B07 #571B11 #8A2B1B #BD3B25

Accessibility & contrast

On white

13.37

#571B11 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#571B11 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #571B11

13.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##571B11	#FFFFFF	#000000	##FFFFFF
##571B11	1.00	13.37	1.57	13.37
#FFFFFF	13.37	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C2710

Deuteranopia (green-blind)

#3B340F

Tritanopia (blue-blind)

#600C19

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #571b11;
/* rgb */ color: rgb(87, 27, 17);
/* oklch */ color: oklch(31.6% 0.091 31.8);

Tailwind

colors: {
  custom: {
    50: '#8c5b4f',
    500: '#571b11',
    950: '#000000',
  },
}

SCSS

$custom: #571b11;
$custom-light: #8c5b4f;
$custom-dark: #000000;

JSON

{
  "hex": "#571b11",
  "rgb": {
    "r": 87,
    "g": 27,
    "b": 17
  },
  "hsl": {
    "h": 8.571,
    "s": 67.308,
    "l": 20.392
  },
  "oklch": {
    "l": 0.31583,
    "c": 0.09112,
    "h": 31.8
  },
  "luminance": 0.02851
}

Semantic roles & 50–950 ramp

primary

#571B11

secondary

#348390

accent

#D2EA3E

background

#F9F5F4

surface

#F1E9E7

border

#CBC5C3

text

#0D0402

muted

#7E7978

Preview Lab

Preview with #571B11

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

Preview Lab → · Contrast checker → · Palette generator →