#581B18#581B18

#581B18 is a dark, moderate red. Relative luminance 0.029; OKLCH L 31.9% C 0.091 H 26.4°. Best body text is #FFFFFF at 13.25:1 contrast (WCAG AA passes).

Color values

HEX	#581B18
RGB	rgb(88, 27, 24)
HSL	hsl(3, 57%, 22%)
HSV	hsv(3, 73%, 35%)
CMYK	cmyk(0%, 69.3%, 72.7%, 65.5%)
CIE-LAB	lab(19.74, 27.91, 17.27)
CIE-LCH	lch(19.74, 32.82, 31.75°)
OKLab	oklab(31.88% 0.0814 0.0404)
OKLCH	oklch(31.88% 0.091 26.4)
XYZ	xyz(4.5818, 2.9252, 1.1873)
Luminance	0.0293 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#581B18 #185558

analogous

#581835 #581B18 #583B18

triadic

#581B18 #18581B #1B1858

tetradic

#581B18 #355818 #185558 #3B1858

square

#581B18 #355818 #185558 #3B1858

split-complementary

#581B18 #18583B #183558

monochromatic

#180707 #280C0B #581B18 #882A25 #B83932

Accessibility & contrast

On white

13.25

#581B18 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#581B18 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #581B18

13.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##581B18	#FFFFFF	#000000	##FFFFFF
##581B18	1.00	13.25	1.59	13.25
#FFFFFF	13.25	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B2717

Deuteranopia (green-blind)

#3B3516

Tritanopia (blue-blind)

#610D1B

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #581b18;
/* rgb */ color: rgb(88, 27, 24);
/* oklch */ color: oklch(31.9% 0.091 26.4);

Tailwind

colors: {
  custom: {
    50: '#8c5b54',
    500: '#581b18',
    950: '#000000',
  },
}

SCSS

$custom: #581b18;
$custom-light: #8c5b54;
$custom-dark: #000000;

JSON

{
  "hex": "#581b18",
  "rgb": {
    "r": 88,
    "g": 27,
    "b": 24
  },
  "hsl": {
    "h": 2.813,
    "s": 57.143,
    "l": 21.961
  },
  "oklch": {
    "l": 0.31883,
    "c": 0.09085,
    "h": 26.4
  },
  "luminance": 0.02925
}

Semantic roles & 50–950 ramp

primary

#581B18

secondary

#3D8B8F

accent

#D9E047

background

#F9F5F4

surface

#F1E9E7

border

#CBC5C3

text

#0D0402

muted

#7E7978

Preview Lab

Preview with #581B18

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

Preview Lab → · Contrast checker → · Palette generator →