#581B13#581B13

#581B13 is a dark, moderate red. Relative luminance 0.029; OKLCH L 31.8% C 0.092 H 30.3°. Best body text is #FFFFFF at 13.28:1 contrast (WCAG AA passes).

Color values

HEX	#581B13
RGB	rgb(88, 27, 19)
HSL	hsl(7, 64%, 21%)
HSV	hsv(7, 78%, 35%)
CMYK	cmyk(0%, 69.3%, 78.4%, 65.5%)
CIE-LAB	lab(19.66, 27.62, 20.48)
CIE-LCH	lch(19.66, 34.39, 36.56°)
OKLab	oklab(31.8% 0.0793 0.0464)
OKLCH	oklch(31.8% 0.092 30.3)
XYZ	xyz(4.5345, 2.9062, 0.9382)
Luminance	0.0291 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#581B13 #135058

analogous

#58132D #581B13 #583D13

triadic

#581B13 #13581B #1B1358

tetradic

#581B13 #2D5813 #135058 #3D1358

square

#581B13 #2D5813 #135058 #3D1358

split-complementary

#581B13 #13583D #132D58

monochromatic

#190805 #260C08 #581B13 #8A2A1E #BD3A29

Accessibility & contrast

On white

13.28

#581B13 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#581B13 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #581B13

13.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##581B13	#FFFFFF	#000000	##FFFFFF
##581B13	1.00	13.28	1.58	13.28
#FFFFFF	13.28	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C2712

Deuteranopia (green-blind)

#3B3511

Tritanopia (blue-blind)

#610C19

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #581b13;
/* rgb */ color: rgb(88, 27, 19);
/* oklch */ color: oklch(31.8% 0.092 30.3);

Tailwind

colors: {
  custom: {
    50: '#8d5b51',
    500: '#581b13',
    950: '#000000',
  },
}

SCSS

$custom: #581b13;
$custom-light: #8d5b51;
$custom-dark: #000000;

JSON

{
  "hex": "#581b13",
  "rgb": {
    "r": 88,
    "g": 27,
    "b": 19
  },
  "hsl": {
    "h": 6.957,
    "s": 64.486,
    "l": 20.98
  },
  "oklch": {
    "l": 0.318,
    "c": 0.09189,
    "h": 30.3
  },
  "luminance": 0.02906
}

Semantic roles & 50–950 ramp

primary

#581B13

secondary

#378690

accent

#D4E740

background

#F9F5F4

surface

#F1E9E7

border

#CBC5C3

text

#0D0402

muted

#7E7978

Preview Lab

Preview with #581B13

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

Preview Lab → · Contrast checker → · Palette generator →