#551B11#551B11

#551B11 is a dark, moderate red. Relative luminance 0.028; OKLCH L 31.2% C 0.089 H 32.0°. Best body text is #FFFFFF at 13.54:1 contrast (WCAG AA passes).

Color values

HEX	#551B11
RGB	rgb(85, 27, 17)
HSL	hsl(9, 67%, 20%)
HSV	hsv(9, 80%, 33%)
CMYK	cmyk(0%, 68.2%, 80%, 66.7%)
CIE-LAB	lab(19.04, 26.29, 20.83)
CIE-LCH	lch(19.04, 33.54, 38.38°)
OKLab	oklab(31.21% 0.0751 0.047)
OKLCH	oklch(31.21% 0.089 32)
XYZ	xyz(4.2399, 2.7562, 0.8390)
Luminance	0.0276 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#551B11 #114B55

analogous

#551129 #551B11 #553D11

triadic

#551B11 #11551B #1B1155

tetradic

#551B11 #295511 #114B55 #3D1155

square

#551B11 #295511 #114B55 #3D1155

split-complementary

#551B11 #11553D #112955

monochromatic

#1A0805 #220B07 #551B11 #882B1B #BB3B25

Accessibility & contrast

On white

13.54

#551B11 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#551B11 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551B11

13.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##551B11	#FFFFFF	#000000	##FFFFFF
##551B11	1.00	13.54	1.55	13.54
#FFFFFF	13.54	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B2610

Deuteranopia (green-blind)

#39330F

Tritanopia (blue-blind)

#5E0D19

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #551b11;
/* rgb */ color: rgb(85, 27, 17);
/* oklch */ color: oklch(31.2% 0.089 32.0);

Tailwind

colors: {
  custom: {
    50: '#8a5a4f',
    500: '#551b11',
    950: '#000000',
  },
}

SCSS

$custom: #551b11;
$custom-light: #8a5a4f;
$custom-dark: #000000;

JSON

{
  "hex": "#551b11",
  "rgb": {
    "r": 85,
    "g": 27,
    "b": 17
  },
  "hsl": {
    "h": 8.824,
    "s": 66.667,
    "l": 20
  },
  "oklch": {
    "l": 0.31208,
    "c": 0.08861,
    "h": 32
  },
  "luminance": 0.02756
}

Semantic roles & 50–950 ramp

primary

#551B11

secondary

#34818E

accent

#D0EA3E

background

#F9F5F4

surface

#F1E9E7

border

#CBC5C3

text

#0D0402

muted

#7E7978

Preview Lab

Preview with #551B11

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

Preview Lab → · Contrast checker → · Palette generator →