#511B18#511B18

#511B18 is a dark, moderate red. Relative luminance 0.026; OKLCH L 30.6% C 0.082 H 26.2°. Best body text is #FFFFFF at 13.82:1 contrast (WCAG AA passes).

Color values

HEX	#511B18
RGB	rgb(81, 27, 24)
HSL	hsl(3, 54%, 21%)
HSV	hsv(3, 70%, 32%)
CMYK	cmyk(0%, 66.7%, 70.4%, 68.2%)
CIE-LAB	lab(18.36, 25.08, 15.27)
CIE-LCH	lch(18.36, 29.36, 31.34°)
OKLab	oklab(30.58% 0.0734 0.0362)
OKLCH	oklch(30.58% 0.082 26.2)
XYZ	xyz(3.9505, 2.5997, 1.1577)
Luminance	0.0260 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B18 #184E51

analogous

#511831 #511B18 #513718

triadic

#511B18 #18511B #1B1851

tetradic

#511B18 #315118 #184E51 #371851

square

#511B18 #315118 #184E51 #371851

split-complementary

#511B18 #185137 #183151

monochromatic

#180807 #220B0A #511B18 #802B26 #AF3A34

Accessibility & contrast

On white

13.82

#511B18 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#511B18 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B18

13.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B18	#FFFFFF	#000000	##FFFFFF
##511B18	1.00	13.82	1.52	13.82
#FFFFFF	13.82	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#292617

Deuteranopia (green-blind)

#373117

Tritanopia (blue-blind)

#59101B

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #511b18;
/* rgb */ color: rgb(81, 27, 24);
/* oklch */ color: oklch(30.6% 0.082 26.2);

Tailwind

colors: {
  custom: {
    50: '#865a54',
    500: '#511b18',
    950: '#000000',
  },
}

SCSS

$custom: #511b18;
$custom-light: #865a54;
$custom-dark: #000000;

JSON

{
  "hex": "#511b18",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 24
  },
  "hsl": {
    "h": 3.158,
    "s": 54.286,
    "l": 20.588
  },
  "oklch": {
    "l": 0.30584,
    "c": 0.08186,
    "h": 26.2
  },
  "luminance": 0.02599
}

Semantic roles & 50–950 ramp

primary

#511B18

secondary

#3D8488

accent

#D6DE4A

background

#F8F5F4

surface

#F0E9E7

border

#CBC5C3

text

#0C0402

muted

#7D7978

Preview Lab

Preview with #511B18

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

Preview Lab → · Contrast checker → · Palette generator →