#581B10#581B10

#581B10 is a dark, moderate red. Relative luminance 0.029; OKLCH L 31.8% C 0.093 H 32.4°. Best body text is #FFFFFF at 13.30:1 contrast (WCAG AA passes).

Color values

HEX	#581B10
RGB	rgb(88, 27, 16)
HSL	hsl(9, 69%, 20%)
HSV	hsv(9, 82%, 35%)
CMYK	cmyk(0%, 69.3%, 81.8%, 65.5%)
CIE-LAB	lab(19.62, 27.47, 22.23)
CIE-LCH	lch(19.62, 35.33, 38.98°)
OKLab	oklab(31.76% 0.0782 0.0497)
OKLCH	oklch(31.76% 0.093 32.4)
XYZ	xyz(4.5105, 2.8966, 0.8117)
Luminance	0.0290 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#581B10 #104D58

analogous

#581029 #581B10 #583F10

triadic

#581B10 #10581B #1B1058

tetradic

#581B10 #295810 #104D58 #3F1058

square

#581B10 #295810 #104D58 #3F1058

split-complementary

#581B10 #10583F #102958

monochromatic

#1A0805 #240B07 #581B10 #8C2B19 #C03B23

Accessibility & contrast

On white

13.30

#581B10 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#581B10 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #581B10

13.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##581B10	#FFFFFF	#000000	##FFFFFF
##581B10	1.00	13.30	1.58	13.30
#FFFFFF	13.30	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C270E

Deuteranopia (green-blind)

#3B340E

Tritanopia (blue-blind)

#610B19

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #581b10;
/* rgb */ color: rgb(88, 27, 16);
/* oklch */ color: oklch(31.8% 0.093 32.4);

Tailwind

colors: {
  custom: {
    50: '#8d5b4f',
    500: '#581b10',
    950: '#000000',
  },
}

SCSS

$custom: #581b10;
$custom-light: #8d5b4f;
$custom-dark: #000000;

JSON

{
  "hex": "#581b10",
  "rgb": {
    "r": 88,
    "g": 27,
    "b": 16
  },
  "hsl": {
    "h": 9.167,
    "s": 69.231,
    "l": 20.392
  },
  "oklch": {
    "l": 0.31758,
    "c": 0.0926,
    "h": 32.4
  },
  "luminance": 0.02896
}

Semantic roles & 50–950 ramp

primary

#581B10

secondary

#328391

accent

#D1EC3C

background

#F9F5F4

surface

#F1E9E7

border

#CBC5C3

text

#0D0401

muted

#7E7977

Preview Lab

Preview with #581B10

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

Preview Lab → · Contrast checker → · Palette generator →