#581C18#581C18

#581C18 is a dark, moderate red. Relative luminance 0.030; OKLCH L 32.0% C 0.090 H 27.1°. Best body text is #FFFFFF at 13.17:1 contrast (WCAG AA passes).

Color values

HEX	#581C18
RGB	rgb(88, 28, 24)
HSL	hsl(4, 57%, 22%)
HSV	hsv(4, 73%, 35%)
CMYK	cmyk(0%, 68.2%, 72.7%, 65.5%)
CIE-LAB	lab(19.93, 27.41, 17.50)
CIE-LCH	lch(19.93, 32.52, 32.56°)
OKLab	oklab(32.03% 0.0798 0.0409)
OKLCH	oklch(32.03% 0.09 27.1)
XYZ	xyz(4.6051, 2.9718, 1.1951)
Luminance	0.0297 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#581C18 #185458

analogous

#581834 #581C18 #583C18

triadic

#581C18 #18581C #1C1858

tetradic

#581C18 #345818 #185458 #3C1858

square

#581C18 #345818 #185458 #3C1858

split-complementary

#581C18 #18583C #183458

monochromatic

#180807 #280D0B #581C18 #882B25 #B83B32

Accessibility & contrast

On white

13.17

#581C18 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#581C18 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #581C18

13.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##581C18	#FFFFFF	#000000	##FFFFFF
##581C18	1.00	13.17	1.59	13.17
#FFFFFF	13.17	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C2817

Deuteranopia (green-blind)

#3B3516

Tritanopia (blue-blind)

#610E1B

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #581c18;
/* rgb */ color: rgb(88, 28, 24);
/* oklch */ color: oklch(32.0% 0.090 27.1);

Tailwind

colors: {
  custom: {
    50: '#8c5b54',
    500: '#581c18',
    950: '#000000',
  },
}

SCSS

$custom: #581c18;
$custom-light: #8c5b54;
$custom-dark: #000000;

JSON

{
  "hex": "#581c18",
  "rgb": {
    "r": 88,
    "g": 28,
    "b": 24
  },
  "hsl": {
    "h": 3.75,
    "s": 57.143,
    "l": 21.961
  },
  "oklch": {
    "l": 0.32025,
    "c": 0.08965,
    "h": 27.1
  },
  "luminance": 0.02971
}

Semantic roles & 50–950 ramp

primary

#581C18

secondary

#3D8A8F

accent

#D7E047

background

#F9F5F4

surface

#F1E9E7

border

#CBC5C3

text

#0D0403

muted

#7E7978

Preview Lab

Preview with #581C18

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

Preview Lab → · Contrast checker → · Palette generator →