#55181D#55181D

#55181D is a dark, moderate red. Relative luminance 0.027; OKLCH L 31.0% C 0.090 H 19.5°. Best body text is #FFFFFF at 13.68:1 contrast (WCAG AA passes).

Color values

HEX	#55181D
RGB	rgb(85, 24, 29)
HSL	hsl(355, 56%, 21%)
HSV	hsv(355, 72%, 33%)
CMYK	cmyk(0%, 71.8%, 65.9%, 66.7%)
CIE-LAB	lab(18.69, 28.58, 12.38)
CIE-LCH	lch(18.69, 31.14, 23.42°)
OKLab	oklab(31.01% 0.085 0.0301)
OKLCH	oklch(31.01% 0.09 19.5)
XYZ	xyz(4.2951, 2.6739, 1.4521)
Luminance	0.0267 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#55181D #185550

analogous

#55183C #55181D #553218

triadic

#55181D #1D5518 #181D55

tetradic

#55181D #3C5518 #185550 #321855

square

#55181D #3C5518 #185550 #321855

split-complementary

#55181D #185532 #183C55

monochromatic

#180708 #250B0D #55181D #85252D #B4333E

Accessibility & contrast

On white

13.68

#55181D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#55181D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #55181D

13.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##55181D	#FFFFFF	#000000	##FFFFFF
##55181D	1.00	13.68	1.53	13.68
#FFFFFF	13.68	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#28251D

Deuteranopia (green-blind)

#37321B

Tritanopia (blue-blind)

#5E0B1A

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #55181d;
/* rgb */ color: rgb(85, 24, 29);
/* oklch */ color: oklch(31.0% 0.090 19.5);

Tailwind

colors: {
  custom: {
    50: '#8a5958',
    500: '#55181d',
    950: '#000000',
  },
}

SCSS

$custom: #55181d;
$custom-light: #8a5958;
$custom-dark: #000000;

JSON

{
  "hex": "#55181d",
  "rgb": {
    "r": 85,
    "g": 24,
    "b": 29
  },
  "hsl": {
    "h": 355.082,
    "s": 55.963,
    "l": 21.373
  },
  "oklch": {
    "l": 0.3101,
    "c": 0.09017,
    "h": 19.5
  },
  "luminance": 0.02673
}

Semantic roles & 50–950 ramp

primary

#55181D

secondary

#3D8C85

accent

#DFD349

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0403

muted

#7D7978

Preview Lab

Preview with #55181D

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

Preview Lab → · Contrast checker → · Palette generator →