#511D18#511D18

#511D18 is a dark, moderate red. Relative luminance 0.027; OKLCH L 30.9% C 0.079 H 28.1°. Best body text is #FFFFFF at 13.65:1 contrast (WCAG AA passes).

Color values

HEX	#511D18
RGB	rgb(81, 29, 24)
HSL	hsl(5, 54%, 21%)
HSV	hsv(5, 70%, 32%)
CMYK	cmyk(0%, 64.2%, 70.4%, 68.2%)
CIE-LAB	lab(18.78, 23.99, 15.78)
CIE-LCH	lch(18.78, 28.72, 33.34°)
OKLab	oklab(30.9% 0.07 0.0373)
OKLCH	oklch(30.9% 0.079 28.1)
XYZ	xyz(3.9980, 2.6945, 1.1735)
Luminance	0.0269 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511D18 #184C51

analogous

#51182F #511D18 #513918

triadic

#511D18 #18511D #1D1851

tetradic

#511D18 #2F5118 #184C51 #391851

square

#511D18 #2F5118 #184C51 #391851

split-complementary

#511D18 #185139 #182F51

monochromatic

#180807 #220C0A #511D18 #802E26 #AF3F34

Accessibility & contrast

On white

13.65

#511D18 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#511D18 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511D18

13.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511D18	#FFFFFF	#000000	##FFFFFF
##511D18	1.00	13.65	1.54	13.65
#FFFFFF	13.65	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A2717

Deuteranopia (green-blind)

#373217

Tritanopia (blue-blind)

#59131C

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #511d18;
/* rgb */ color: rgb(81, 29, 24);
/* oklch */ color: oklch(30.9% 0.079 28.1);

Tailwind

colors: {
  custom: {
    50: '#865b54',
    500: '#511d18',
    950: '#000000',
  },
}

SCSS

$custom: #511d18;
$custom-light: #865b54;
$custom-dark: #000000;

JSON

{
  "hex": "#511d18",
  "rgb": {
    "r": 81,
    "g": 29,
    "b": 24
  },
  "hsl": {
    "h": 5.263,
    "s": 54.286,
    "l": 20.588
  },
  "oklch": {
    "l": 0.30896,
    "c": 0.07934,
    "h": 28.1
  },
  "luminance": 0.02694
}

Semantic roles & 50–950 ramp

primary

#511D18

secondary

#3D8188

accent

#D1DE4A

background

#F8F5F4

surface

#F0E9E7

border

#CBC5C3

text

#0C0402

muted

#7D7978

Preview Lab

Preview with #511D18

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

Preview Lab → · Contrast checker → · Palette generator →