#581B17#581B17

#581B17 is a dark, moderate red. Relative luminance 0.029; OKLCH L 31.9% C 0.091 H 27.2°. Best body text is #FFFFFF at 13.26:1 contrast (WCAG AA passes).

Color values

HEX	#581B17
RGB	rgb(88, 27, 23)
HSL	hsl(4, 59%, 22%)
HSV	hsv(4, 74%, 35%)
CMYK	cmyk(0%, 69.3%, 73.9%, 65.5%)
CIE-LAB	lab(19.73, 27.85, 17.92)
CIE-LCH	lch(19.73, 33.12, 32.77°)
OKLab	oklab(31.87% 0.081 0.0416)
OKLCH	oklch(31.87% 0.091 27.2)
XYZ	xyz(4.5716, 2.9211, 1.1335)
Luminance	0.0292 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#581B17 #175458

analogous

#581734 #581B17 #583C17

triadic

#581B17 #17581B #1B1758

tetradic

#581B17 #345817 #175458 #3C1758

square

#581B17 #345817 #175458 #3C1758

split-complementary

#581B17 #17583C #173458

monochromatic

#180706 #270C0A #581B17 #892A24 #B93930

Accessibility & contrast

On white

13.26

#581B17 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#581B17 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #581B17

13.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##581B17	#FFFFFF	#000000	##FFFFFF
##581B17	1.00	13.26	1.58	13.26
#FFFFFF	13.26	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B2716

Deuteranopia (green-blind)

#3B3515

Tritanopia (blue-blind)

#610C1B

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #581b17;
/* rgb */ color: rgb(88, 27, 23);
/* oklch */ color: oklch(31.9% 0.091 27.2);

Tailwind

colors: {
  custom: {
    50: '#8c5b54',
    500: '#581b17',
    950: '#000000',
  },
}

SCSS

$custom: #581b17;
$custom-light: #8c5b54;
$custom-dark: #000000;

JSON

{
  "hex": "#581b17",
  "rgb": {
    "r": 88,
    "g": 27,
    "b": 23
  },
  "hsl": {
    "h": 3.692,
    "s": 58.559,
    "l": 21.765
  },
  "oklch": {
    "l": 0.31865,
    "c": 0.09103,
    "h": 27.2
  },
  "luminance": 0.0292
}

Semantic roles & 50–950 ramp

primary

#581B17

secondary

#3C8A8F

accent

#D8E246

background

#F9F5F4

surface

#F1E9E7

border

#CBC5C3

text

#0D0402

muted

#7E7978

Preview Lab

Preview with #581B17

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

Preview Lab → · Contrast checker → · Palette generator →