#571B10#571B10

#571B10 is a dark, moderate red. Relative luminance 0.028; OKLCH L 31.6% C 0.091 H 32.5°. Best body text is #FFFFFF at 13.38:1 contrast (WCAG AA passes).

Color values

HEX	#571B10
RGB	rgb(87, 27, 16)
HSL	hsl(9, 69%, 20%)
HSV	hsv(9, 82%, 34%)
CMYK	cmyk(0%, 69%, 81.6%, 65.9%)
CIE-LAB	lab(19.43, 27.06, 21.94)
CIE-LCH	lch(19.43, 34.84, 39.04°)
OKLab	oklab(31.57% 0.077 0.0491)
OKLCH	oklch(31.57% 0.091 32.5)
XYZ	xyz(4.4164, 2.8481, 0.8073)
Luminance	0.0285 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#571B10 #104C57

analogous

#571028 #571B10 #573F10

triadic

#571B10 #10571B #1B1057

tetradic

#571B10 #285710 #104C57 #3F1057

square

#571B10 #285710 #104C57 #3F1057

split-complementary

#571B10 #10573F #102857

monochromatic

#1A0805 #230B06 #571B10 #8B2B1A #BE3B23

Accessibility & contrast

On white

13.38

#571B10 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#571B10 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #571B10

13.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##571B10	#FFFFFF	#000000	##FFFFFF
##571B10	1.00	13.38	1.57	13.38
#FFFFFF	13.38	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C270E

Deuteranopia (green-blind)

#3B340E

Tritanopia (blue-blind)

#600B19

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #571b10;
/* rgb */ color: rgb(87, 27, 16);
/* oklch */ color: oklch(31.6% 0.091 32.5);

Tailwind

colors: {
  custom: {
    50: '#8c5b4f',
    500: '#571b10',
    950: '#000000',
  },
}

SCSS

$custom: #571b10;
$custom-light: #8c5b4f;
$custom-dark: #000000;

JSON

{
  "hex": "#571b10",
  "rgb": {
    "r": 87,
    "g": 27,
    "b": 16
  },
  "hsl": {
    "h": 9.296,
    "s": 68.932,
    "l": 20.196
  },
  "oklch": {
    "l": 0.3157,
    "c": 0.09136,
    "h": 32.5
  },
  "luminance": 0.02848
}

Semantic roles & 50–950 ramp

primary

#571B10

secondary

#328290

accent

#D1EC3C

background

#F9F5F4

surface

#F1E9E7

border

#CBC5C3

text

#0D0401

muted

#7E7977

Preview Lab

Preview with #571B10

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

Preview Lab → · Contrast checker → · Palette generator →