#55181C#55181C

#55181C is a dark, moderate red. Relative luminance 0.027; OKLCH L 31.0% C 0.090 H 20.4°. Best body text is #FFFFFF at 13.69:1 contrast (WCAG AA passes).

Color values

HEX	#55181C
RGB	rgb(85, 24, 28)
HSL	hsl(356, 56%, 21%)
HSV	hsv(356, 72%, 33%)
CMYK	cmyk(0%, 71.8%, 67.1%, 66.7%)
CIE-LAB	lab(18.67, 28.50, 13.05)
CIE-LCH	lch(18.67, 31.35, 24.60°)
OKLab	oklab(30.99% 0.0846 0.0315)
OKLCH	oklch(30.99% 0.09 20.4)
XYZ	xyz(4.2830, 2.6690, 1.3880)
Luminance	0.0267 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#55181C #185551

analogous

#55183B #55181C #553318

triadic

#55181C #1C5518 #181C55

tetradic

#55181C #3B5518 #185551 #331855

square

#55181C #3B5518 #185551 #331855

split-complementary

#55181C #185533 #183B55

monochromatic

#180708 #250B0C #55181C #85252C #B4333B

Accessibility & contrast

On white

13.69

#55181C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#55181C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #55181C

13.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##55181C	#FFFFFF	#000000	##FFFFFF
##55181C	1.00	13.69	1.53	13.69
#FFFFFF	13.69	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#28251C

Deuteranopia (green-blind)

#37321A

Tritanopia (blue-blind)

#5E0A1A

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #55181c;
/* rgb */ color: rgb(85, 24, 28);
/* oklch */ color: oklch(31.0% 0.090 20.4);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#55181c",
  "rgb": {
    "r": 85,
    "g": 24,
    "b": 28
  },
  "hsl": {
    "h": 356.066,
    "s": 55.963,
    "l": 21.373
  },
  "oklch": {
    "l": 0.30988,
    "c": 0.09023,
    "h": 20.4
  },
  "luminance": 0.02668
}

Semantic roles & 50–950 ramp

primary

#55181C

secondary

#3D8C87

accent

#DFD549

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0403

muted

#7D7978

Preview Lab

Preview with #55181C

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

Preview Lab → · Contrast checker → · Palette generator →