#5A181F#5A181F

#5A181F is a dark, moderate red. Relative luminance 0.029; OKLCH L 32.0% C 0.096 H 18.5°. Best body text is #FFFFFF at 13.25:1 contrast (WCAG AA passes).

Color values

HEX	#5A181F
RGB	rgb(90, 24, 31)
HSL	hsl(354, 58%, 22%)
HSV	hsv(354, 73%, 35%)
CMYK	cmyk(0%, 73.3%, 65.6%, 64.7%)
CIE-LAB	lab(19.75, 30.62, 12.56)
CIE-LCH	lch(19.75, 33.09, 22.30°)
OKLab	oklab(32.01% 0.0912 0.0305)
OKLCH	oklch(32.01% 0.096 18.5)
XYZ	xyz(4.7909, 2.9265, 1.6087)
Luminance	0.0293 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5A181F #185A53

analogous

#5A1840 #5A181F #5A3218

triadic

#5A181F #1F5A18 #181F5A

tetradic

#5A181F #405A18 #185A53 #32185A

square

#5A181F #405A18 #185A53 #32185A

split-complementary

#5A181F #185A32 #18405A

monochromatic

#180608 #2A0B0E #5A181F #8A2530 #BB3240

Accessibility & contrast

On white

13.25

#5A181F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#5A181F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #5A181F

13.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5A181F	#FFFFFF	#000000	##FFFFFF
##5A181F	1.00	13.25	1.59	13.25
#FFFFFF	13.25	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#29271F

Deuteranopia (green-blind)

#3A351D

Tritanopia (blue-blind)

#63081B

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #5a181f;
/* rgb */ color: rgb(90, 24, 31);
/* oklch */ color: oklch(32.0% 0.096 18.5);

Tailwind

colors: {
  custom: {
    50: '#8e5a5a',
    500: '#5a181f',
    950: '#000000',
  },
}

SCSS

$custom: #5a181f;
$custom-light: #8e5a5a;
$custom-dark: #000000;

JSON

{
  "hex": "#5a181f",
  "rgb": {
    "r": 90,
    "g": 24,
    "b": 31
  },
  "hsl": {
    "h": 353.636,
    "s": 57.895,
    "l": 22.353
  },
  "oklch": {
    "l": 0.32006,
    "c": 0.09619,
    "h": 18.5
  },
  "luminance": 0.02926
}

Semantic roles & 50–950 ramp

primary

#5A181F

secondary

#3D9188

accent

#E1D147

background

#F9F5F5

surface

#F1E9E9

border

#CBC5C5

text

#0D0403

muted

#7E7978

Preview Lab

Preview with #5A181F

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

Preview Lab → · Contrast checker → · Palette generator →