#5A181B#5A181B

#5A181B is a dark, moderate red. Relative luminance 0.029; OKLCH L 31.9% C 0.096 H 22.0°. Best body text is #FFFFFF at 13.28:1 contrast (WCAG AA passes).

Color values

HEX	#5A181B
RGB	rgb(90, 24, 27)
HSL	hsl(357, 58%, 22%)
HSV	hsv(357, 73%, 35%)
CMYK	cmyk(0%, 73.3%, 70%, 64.7%)
CIE-LAB	lab(19.67, 30.33, 15.23)
CIE-LCH	lch(19.67, 33.93, 26.66°)
OKLab	oklab(31.92% 0.0894 0.0362)
OKLCH	oklch(31.92% 0.096 22)
XYZ	xyz(4.7414, 2.9067, 1.3481)
Luminance	0.0291 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5A181B #185A57

analogous

#5A183C #5A181B #5A3618

triadic

#5A181B #1B5A18 #181B5A

tetradic

#5A181B #3C5A18 #185A57 #36185A

square

#5A181B #3C5A18 #185A57 #36185A

split-complementary

#5A181B #185A36 #183C5A

monochromatic

#180607 #2A0B0D #5A181B #8A2529 #BB3238

Accessibility & contrast

On white

13.28

#5A181B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#5A181B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #5A181B

13.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5A181B	#FFFFFF	#000000	##FFFFFF
##5A181B	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)

#2A271B

Deuteranopia (green-blind)

#3A3519

Tritanopia (blue-blind)

#63071A

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #5a181b;
/* rgb */ color: rgb(90, 24, 27);
/* oklch */ color: oklch(31.9% 0.096 22.0);

Tailwind

colors: {
  custom: {
    50: '#8e5a57',
    500: '#5a181b',
    950: '#000000',
  },
}

SCSS

$custom: #5a181b;
$custom-light: #8e5a57;
$custom-dark: #000000;

JSON

{
  "hex": "#5a181b",
  "rgb": {
    "r": 90,
    "g": 24,
    "b": 27
  },
  "hsl": {
    "h": 357.273,
    "s": 57.895,
    "l": 22.353
  },
  "oklch": {
    "l": 0.31919,
    "c": 0.09646,
    "h": 22
  },
  "luminance": 0.02906
}

Semantic roles & 50–950 ramp

primary

#5A181B

secondary

#3D918D

accent

#E1DA47

background

#F9F5F5

surface

#F1E9E9

border

#CBC5C5

text

#0D0403

muted

#7E7978

Preview Lab

Preview with #5A181B

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

Preview Lab → · Contrast checker → · Palette generator →