#581021#581021

#581021 is a dark, moderate red. Relative luminance 0.026; OKLCH L 30.8% C 0.103 H 12.5°. Best body text is #FFFFFF at 13.90:1 contrast (WCAG AA passes).

Color values

HEX	#581021
RGB	rgb(88, 16, 33)
HSL	hsl(346, 69%, 20%)
HSV	hsv(346, 82%, 35%)
CMYK	cmyk(0%, 81.8%, 62.5%, 65.5%)
CIE-LAB	lab(18.17, 33.40, 8.97)
CIE-LCH	lch(18.17, 34.58, 15.03°)
OKLab	oklab(30.77% 0.1008 0.0223)
OKLCH	oklch(30.77% 0.103 12.5)
XYZ	xyz(4.4847, 2.5557, 1.6957)
Luminance	0.0255 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#581021 #105847

analogous

#581045 #581021 #582310

triadic

#581021 #215810 #102158

tetradic

#581021 #455810 #105847 #231058

square

#581021 #455810 #105847 #231058

split-complementary

#581021 #105823 #104558

monochromatic

#1A050A #24070E #581021 #8C1934 #C02348

Accessibility & contrast

On white

13.90

#581021 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#581021 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #581021

13.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##581021	#FFFFFF	#000000	##FFFFFF
##581021	1.00	13.90	1.51	13.90
#FFFFFF	13.90	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#232321

Deuteranopia (green-blind)

#36321F

Tritanopia (blue-blind)

#610017

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #581021;
/* rgb */ color: rgb(88, 16, 33);
/* oklch */ color: oklch(30.8% 0.103 12.5);

Tailwind

colors: {
  custom: {
    50: '#8c565b',
    500: '#581021',
    950: '#000000',
  },
}

SCSS

$custom: #581021;
$custom-light: #8c565b;
$custom-dark: #000000;

JSON

{
  "hex": "#581021",
  "rgb": {
    "r": 88,
    "g": 16,
    "b": 33
  },
  "hsl": {
    "h": 345.833,
    "s": 69.231,
    "l": 20.392
  },
  "oklch": {
    "l": 0.3077,
    "c": 0.10325,
    "h": 12.5
  },
  "luminance": 0.02555
}

Semantic roles & 50–950 ramp

primary

#581021

secondary

#32917B

accent

#ECC23C

background

#F9F5F5

surface

#F1E9E9

border

#CBC5C5

text

#0D0304

muted

#7E7879

Preview Lab

Preview with #581021

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

Preview Lab → · Contrast checker → · Palette generator →