#511C18#511C18

#511C18 is a dark, moderate red. Relative luminance 0.026; OKLCH L 30.7% C 0.081 H 27.1°. Best body text is #FFFFFF at 13.73:1 contrast (WCAG AA passes).

Color values

HEX	#511C18
RGB	rgb(81, 28, 24)
HSL	hsl(4, 54%, 21%)
HSV	hsv(4, 70%, 32%)
CMYK	cmyk(0%, 65.4%, 70.4%, 68.2%)
CIE-LAB	lab(18.57, 24.54, 15.52)
CIE-LCH	lch(18.57, 29.04, 32.32°)
OKLab	oklab(30.74% 0.0717 0.0368)
OKLCH	oklch(30.74% 0.081 27.1)
XYZ	xyz(3.9738, 2.6463, 1.1655)
Luminance	0.0265 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511C18 #184D51

analogous

#511830 #511C18 #513818

triadic

#511C18 #18511C #1C1851

tetradic

#511C18 #305118 #184D51 #381851

square

#511C18 #305118 #184D51 #381851

split-complementary

#511C18 #185138 #183051

monochromatic

#180807 #220C0A #511C18 #802C26 #AF3D34

Accessibility & contrast

On white

13.73

#511C18 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#511C18 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511C18

13.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511C18	#FFFFFF	#000000	##FFFFFF
##511C18	1.00	13.73	1.53	13.73
#FFFFFF	13.73	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A2617

Deuteranopia (green-blind)

#373117

Tritanopia (blue-blind)

#59111B

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #511c18;
/* rgb */ color: rgb(81, 28, 24);
/* oklch */ color: oklch(30.7% 0.081 27.1);

Tailwind

colors: {
  custom: {
    50: '#865b54',
    500: '#511c18',
    950: '#000000',
  },
}

SCSS

$custom: #511c18;
$custom-light: #865b54;
$custom-dark: #000000;

JSON

{
  "hex": "#511c18",
  "rgb": {
    "r": 81,
    "g": 28,
    "b": 24
  },
  "hsl": {
    "h": 4.211,
    "s": 54.286,
    "l": 20.588
  },
  "oklch": {
    "l": 0.30738,
    "c": 0.0806,
    "h": 27.1
  },
  "luminance": 0.02646
}

Semantic roles & 50–950 ramp

primary

#511C18

secondary

#3D8388

accent

#D3DE4A

background

#F8F5F4

surface

#F0E9E7

border

#CBC5C3

text

#0C0402

muted

#7D7978

Preview Lab

Preview with #511C18

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

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