#581B1D#581B1D

#581B1D is a dark, moderate red. Relative luminance 0.029; OKLCH L 32.0% C 0.090 H 21.9°. Best body text is #FFFFFF at 13.21:1 contrast (WCAG AA passes).

Color values

HEX	#581B1D
RGB	rgb(88, 27, 29)
HSL	hsl(358, 53%, 23%)
HSV	hsv(358, 69%, 35%)
CMYK	cmyk(0%, 69.3%, 67%, 65.5%)
CIE-LAB	lab(19.83, 28.26, 13.98)
CIE-LCH	lch(19.83, 31.53, 26.31°)
OKLab	oklab(31.98% 0.0836 0.0336)
OKLCH	oklch(31.98% 0.09 21.9)
XYZ	xyz(4.6387, 2.9479, 1.4869)
Luminance	0.0295 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#581B1D #1B5856

analogous

#581B3B #581B1D #58381B

triadic

#581B1D #1D581B #1B1D58

tetradic

#581B1D #3B581B #1B5856 #381B58

square

#581B1D #3B581B #1B5856 #381B58

split-complementary

#581B1D #1B5838 #1B3B58

monochromatic

#170708 #290D0E #581B1D #87292C #B6383C

Accessibility & contrast

On white

13.21

#581B1D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#581B1D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #581B1D

13.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##581B1D	#FFFFFF	#000000	##FFFFFF
##581B1D	1.00	13.21	1.59	13.21
#FFFFFF	13.21	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B281D

Deuteranopia (green-blind)

#3A351B

Tritanopia (blue-blind)

#610E1C

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #581b1d;
/* rgb */ color: rgb(88, 27, 29);
/* oklch */ color: oklch(32.0% 0.090 21.9);

Tailwind

colors: {
  custom: {
    50: '#8c5b58',
    500: '#581b1d',
    950: '#000000',
  },
}

SCSS

$custom: #581b1d;
$custom-light: #8c5b58;
$custom-dark: #000000;

JSON

{
  "hex": "#581b1d",
  "rgb": {
    "r": 88,
    "g": 27,
    "b": 29
  },
  "hsl": {
    "h": 358.033,
    "s": 53.043,
    "l": 22.549
  },
  "oklch": {
    "l": 0.31982,
    "c": 0.09012,
    "h": 21.9
  },
  "luminance": 0.02947
}

Semantic roles & 50–950 ramp

primary

#581B1D

secondary

#418E8B

accent

#DCD84B

background

#F9F5F5

surface

#F1E9E9

border

#CBC5C5

text

#0D0403

muted

#7E7978

Preview Lab

Preview with #581B1D

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

Preview Lab → · Contrast checker → · Palette generator →