#551818#551818

#551818 is a dark, moderate red. Relative luminance 0.027; OKLCH L 30.9% C 0.091 H 24.1°. Best body text is #FFFFFF at 13.72:1 contrast (WCAG AA passes).

Color values

HEX	#551818
RGB	rgb(85, 24, 24)
HSL	hsl(0, 56%, 21%)
HSV	hsv(0, 72%, 33%)
CMYK	cmyk(0%, 71.8%, 71.8%, 66.7%)
CIE-LAB	lab(18.59, 28.21, 15.72)
CIE-LCH	lch(18.59, 32.30, 29.13°)
OKLab	oklab(30.9% 0.0828 0.037)
OKLCH	oklch(30.9% 0.091 24.1)
XYZ	xyz(4.2382, 2.6511, 1.1525)
Luminance	0.0265 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#551818 #185555

analogous

#551837 #551818 #553718

triadic

#551818 #185518 #181855

tetradic

#551818 #375518 #185555 #371855

square

#551818 #375518 #185555 #371855

split-complementary

#551818 #185537 #183755

monochromatic

#180707 #250B0B #551818 #852525 #B43333

Accessibility & contrast

On white

13.72

#551818 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#551818 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551818

13.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##551818	#FFFFFF	#000000	##FFFFFF
##551818	1.00	13.72	1.53	13.72
#FFFFFF	13.72	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#282517

Deuteranopia (green-blind)

#383216

Tritanopia (blue-blind)

#5E0919

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #551818;
/* rgb */ color: rgb(85, 24, 24);
/* oklch */ color: oklch(30.9% 0.091 24.1);

Tailwind

colors: {
  custom: {
    50: '#8a5954',
    500: '#551818',
    950: '#000000',
  },
}

SCSS

$custom: #551818;
$custom-light: #8a5954;
$custom-dark: #000000;

JSON

{
  "hex": "#551818",
  "rgb": {
    "r": 85,
    "g": 24,
    "b": 24
  },
  "hsl": {
    "h": 0,
    "s": 55.963,
    "l": 21.373
  },
  "oklch": {
    "l": 0.30904,
    "c": 0.09067,
    "h": 24.1
  },
  "luminance": 0.02651
}

Semantic roles & 50–950 ramp

primary

#551818

secondary

#3D8C8C

accent

#DFDF49

background

#F8F5F4

surface

#F0E9E7

border

#CBC5C3

text

#0D0402

muted

#7D7978

Preview Lab

Preview with #551818

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

Preview Lab → · Contrast checker → · Palette generator →