#581D1B#581D1B

#581D1B is a dark, moderate red. Relative luminance 0.030; OKLCH L 32.2% C 0.088 H 25.2°. Best body text is #FFFFFF at 13.07:1 contrast (WCAG AA passes).

Color values

HEX	#581D1B
RGB	rgb(88, 29, 27)
HSL	hsl(2, 53%, 23%)
HSV	hsv(2, 69%, 35%)
CMYK	cmyk(0%, 67%, 69.3%, 65.5%)
CIE-LAB	lab(20.18, 27.10, 15.78)
CIE-LCH	lch(20.18, 31.36, 30.22°)
OKLab	oklab(32.23% 0.0795 0.0375)
OKLCH	oklch(32.23% 0.088 25.2)
XYZ	xyz(4.6621, 3.0332, 1.3767)
Luminance	0.0303 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#581D1B #1B5658

analogous

#581B38 #581D1B #583B1B

triadic

#581D1B #1B581D #1D1B58

tetradic

#581D1B #38581B #1B5658 #3B1B58

square

#581D1B #38581B #1B5658 #3B1B58

split-complementary

#581D1B #1B583B #1B3858

monochromatic

#170807 #290E0D #581D1B #872C29 #B63C38

Accessibility & contrast

On white

13.07

#581D1B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#581D1B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #581D1B

13.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##581D1B	#FFFFFF	#000000	##FFFFFF
##581D1B	1.00	13.07	1.61	13.07
#FFFFFF	13.07	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C291A

Deuteranopia (green-blind)

#3B3519

Tritanopia (blue-blind)

#61111D

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #581d1b;
/* rgb */ color: rgb(88, 29, 27);
/* oklch */ color: oklch(32.2% 0.088 25.2);

Tailwind

colors: {
  custom: {
    50: '#8c5c57',
    500: '#581d1b',
    950: '#000000',
  },
}

SCSS

$custom: #581d1b;
$custom-light: #8c5c57;
$custom-dark: #000000;

JSON

{
  "hex": "#581d1b",
  "rgb": {
    "r": 88,
    "g": 29,
    "b": 27
  },
  "hsl": {
    "h": 1.967,
    "s": 53.043,
    "l": 22.549
  },
  "oklch": {
    "l": 0.32226,
    "c": 0.08788,
    "h": 25.2
  },
  "luminance": 0.03033
}

Semantic roles & 50–950 ramp

primary

#581D1B

secondary

#418B8E

accent

#D8DC4B

background

#F9F5F5

surface

#F1E9E9

border

#CBC5C5

text

#0D0403

muted

#7E7978

Preview Lab

Preview with #581D1B

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

Preview Lab → · Contrast checker → · Palette generator →