#581B11#581B11

#581B11 is a dark, moderate red. Relative luminance 0.029; OKLCH L 31.8% C 0.092 H 31.8°. Best body text is #FFFFFF at 13.29:1 contrast (WCAG AA passes).

Color values

HEX	#581B11
RGB	rgb(88, 27, 17)
HSL	hsl(8, 68%, 21%)
HSV	hsv(8, 81%, 35%)
CMYK	cmyk(0%, 69.3%, 80.7%, 65.5%)
CIE-LAB	lab(19.64, 27.51, 21.67)
CIE-LCH	lch(19.64, 35.02, 38.23°)
OKLab	oklab(31.77% 0.0785 0.0486)
OKLCH	oklch(31.77% 0.092 31.8)
XYZ	xyz(4.5181, 2.8997, 0.8520)
Luminance	0.0290 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#581B11 #114E58

analogous

#58112A #581B11 #583E11

triadic

#581B11 #11581B #1B1158

tetradic

#581B11 #2A5811 #114E58 #3E1158

square

#581B11 #2A5811 #114E58 #3E1158

split-complementary

#581B11 #11583E #112A58

monochromatic

#1A0805 #250B07 #581B11 #8B2B1B #BF3A25

Accessibility & contrast

On white

13.29

#581B11 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#581B11 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #581B11

13.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##581B11	#FFFFFF	#000000	##FFFFFF
##581B11	1.00	13.29	1.58	13.29
#FFFFFF	13.29	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C2710

Deuteranopia (green-blind)

#3B350F

Tritanopia (blue-blind)

#610B19

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #581b11;
/* rgb */ color: rgb(88, 27, 17);
/* oklch */ color: oklch(31.8% 0.092 31.8);

Tailwind

colors: {
  custom: {
    50: '#8d5b4f',
    500: '#581b11',
    950: '#000000',
  },
}

SCSS

$custom: #581b11;
$custom-light: #8d5b4f;
$custom-dark: #000000;

JSON

{
  "hex": "#581b11",
  "rgb": {
    "r": 88,
    "g": 27,
    "b": 17
  },
  "hsl": {
    "h": 8.451,
    "s": 67.619,
    "l": 20.588
  },
  "oklch": {
    "l": 0.31771,
    "c": 0.09236,
    "h": 31.8
  },
  "luminance": 0.02899
}

Semantic roles & 50–950 ramp

primary

#581B11

secondary

#348491

accent

#D2EA3D

background

#F9F5F4

surface

#F1E9E7

border

#CBC5C3

text

#0D0402

muted

#7E7978

Preview Lab

Preview with #581B11

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

Preview Lab → · Contrast checker → · Palette generator →