#581B1F#581B1F

#581B1F is a dark, moderate red. Relative luminance 0.030; OKLCH L 32.0% C 0.090 H 20.0°. Best body text is #FFFFFF at 13.19:1 contrast (WCAG AA passes).

Color values

HEX	#581B1F
RGB	rgb(88, 27, 31)
HSL	hsl(356, 53%, 23%)
HSV	hsv(356, 69%, 35%)
CMYK	cmyk(0%, 69.3%, 64.8%, 65.5%)
CIE-LAB	lab(19.88, 28.42, 12.65)
CIE-LCH	lch(19.88, 31.11, 23.99°)
OKLab	oklab(32.03% 0.0845 0.0308)
OKLCH	oklch(32.03% 0.09 20)
XYZ	xyz(4.6642, 2.9581, 1.6214)
Luminance	0.0296 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#581B1F #1B5854

analogous

#581B3D #581B1F #58361B

triadic

#581B1F #1F581B #1B1F58

tetradic

#581B1F #3D581B #1B5854 #361B58

square

#581B1F #3D581B #1B5854 #361B58

split-complementary

#581B1F #1B5836 #1B3D58

monochromatic

#170708 #290D0F #581B1F #87292F #B63840

Accessibility & contrast

On white

13.19

#581B1F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#581B1F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #581B1F

13.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##581B1F	#FFFFFF	#000000	##FFFFFF
##581B1F	1.00	13.19	1.59	13.19
#FFFFFF	13.19	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A281F

Deuteranopia (green-blind)

#3A351D

Tritanopia (blue-blind)

#610E1D

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #581b1f;
/* rgb */ color: rgb(88, 27, 31);
/* oklch */ color: oklch(32.0% 0.090 20.0);

Tailwind

colors: {
  custom: {
    50: '#8c5b5a',
    500: '#581b1f',
    950: '#000000',
  },
}

SCSS

$custom: #581b1f;
$custom-light: #8c5b5a;
$custom-dark: #000000;

JSON

{
  "hex": "#581b1f",
  "rgb": {
    "r": 88,
    "g": 27,
    "b": 31
  },
  "hsl": {
    "h": 356.066,
    "s": 53.043,
    "l": 22.549
  },
  "oklch": {
    "l": 0.32026,
    "c": 0.08994,
    "h": 20
  },
  "luminance": 0.02958
}

Semantic roles & 50–950 ramp

primary

#581B1F

secondary

#418E89

accent

#DCD34B

background

#F9F5F5

surface

#F1E9E9

border

#CBC5C5

text

#0D0403

muted

#7E7978

Preview Lab

Preview with #581B1F

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

Preview Lab → · Contrast checker → · Palette generator →