#55181F#55181F

#55181F is a dark, moderate red. Relative luminance 0.027; OKLCH L 31.1% C 0.090 H 17.5°. Best body text is #FFFFFF at 13.67:1 contrast (WCAG AA passes).

Color values

HEX	#55181F
RGB	rgb(85, 24, 31)
HSL	hsl(353, 56%, 21%)
HSV	hsv(353, 72%, 33%)
CMYK	cmyk(0%, 71.8%, 63.5%, 66.7%)
CIE-LAB	lab(18.73, 28.74, 11.03)
CIE-LCH	lch(18.73, 30.79, 21.00°)
OKLab	oklab(31.06% 0.0859 0.0271)
OKLCH	oklch(31.06% 0.09 17.5)
XYZ	xyz(4.3207, 2.6841, 1.5866)
Luminance	0.0268 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#55181F #18554E

analogous

#55183E #55181F #553018

triadic

#55181F #1F5518 #181F55

tetradic

#55181F #3E5518 #18554E #301855

square

#55181F #3E5518 #18554E #301855

split-complementary

#55181F #185530 #183E55

monochromatic

#180709 #250B0E #55181F #852530 #B43342

Accessibility & contrast

On white

13.67

#55181F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#55181F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #55181F

13.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##55181F	#FFFFFF	#000000	##FFFFFF
##55181F	1.00	13.67	1.54	13.67
#FFFFFF	13.67	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#27261F

Deuteranopia (green-blind)

#37321D

Tritanopia (blue-blind)

#5E0B1B

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #55181f;
/* rgb */ color: rgb(85, 24, 31);
/* oklch */ color: oklch(31.1% 0.090 17.5);

Tailwind

colors: {
  custom: {
    50: '#89595a',
    500: '#55181f',
    950: '#000000',
  },
}

SCSS

$custom: #55181f;
$custom-light: #89595a;
$custom-dark: #000000;

JSON

{
  "hex": "#55181f",
  "rgb": {
    "r": 85,
    "g": 24,
    "b": 31
  },
  "hsl": {
    "h": 353.115,
    "s": 55.963,
    "l": 21.373
  },
  "oklch": {
    "l": 0.31057,
    "c": 0.0901,
    "h": 17.5
  },
  "luminance": 0.02683
}

Semantic roles & 50–950 ramp

primary

#55181F

secondary

#3D8C83

accent

#DFCE49

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0403

muted

#7D7978

Preview Lab

Preview with #55181F

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

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