#551B10#551B10

#551B10 is a dark, moderate red. Relative luminance 0.028; OKLCH L 31.2% C 0.089 H 32.8°. Best body text is #FFFFFF at 13.54:1 contrast (WCAG AA passes).

Color values

HEX	#551B10
RGB	rgb(85, 27, 16)
HSL	hsl(10, 68%, 20%)
HSV	hsv(10, 81%, 33%)
CMYK	cmyk(0%, 68.2%, 81.2%, 66.7%)
CIE-LAB	lab(19.03, 26.24, 21.38)
CIE-LCH	lch(19.03, 33.85, 39.17°)
OKLab	oklab(31.19% 0.0747 0.0481)
OKLCH	oklch(31.19% 0.089 32.8)
XYZ	xyz(4.2322, 2.7532, 0.7987)
Luminance	0.0275 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#551B10 #104A55

analogous

#551028 #551B10 #553E10

triadic

#551B10 #10551B #1B1055

tetradic

#551B10 #285510 #104A55 #3E1055

square

#551B10 #285510 #104A55 #3E1055

split-complementary

#551B10 #10553E #102855

monochromatic

#1A0805 #210B06 #551B10 #892B1A #BC3C23

Accessibility & contrast

On white

13.54

#551B10 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#551B10 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551B10

13.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##551B10	#FFFFFF	#000000	##FFFFFF
##551B10	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)

#2B260E

Deuteranopia (green-blind)

#3A330E

Tritanopia (blue-blind)

#5E0C19

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #551b10;
/* rgb */ color: rgb(85, 27, 16);
/* oklch */ color: oklch(31.2% 0.089 32.8);

Tailwind

colors: {
  custom: {
    50: '#8b5a4f',
    500: '#551b10',
    950: '#000000',
  },
}

SCSS

$custom: #551b10;
$custom-light: #8b5a4f;
$custom-dark: #000000;

JSON

{
  "hex": "#551b10",
  "rgb": {
    "r": 85,
    "g": 27,
    "b": 16
  },
  "hsl": {
    "h": 9.565,
    "s": 68.317,
    "l": 19.804
  },
  "oklch": {
    "l": 0.31194,
    "c": 0.08886,
    "h": 32.8
  },
  "luminance": 0.02753
}

Semantic roles & 50–950 ramp

primary

#551B10

secondary

#32808F

accent

#CFEB3D

background

#F9F5F4

surface

#F1E9E7

border

#CBC5C3

text

#0D0401

muted

#7E7977

Preview Lab

Preview with #551B10

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

Preview Lab → · Contrast checker → · Palette generator →