#511C0D#511C0D

#511C0D is a dark, moderate red. Relative luminance 0.026; OKLCH L 30.6% C 0.084 H 36.4°. Best body text is #FFFFFF at 13.80:1 contrast (WCAG AA passes).

Color values

HEX	#511C0D
RGB	rgb(81, 28, 13)
HSL	hsl(13, 72%, 18%)
HSV	hsv(13, 84%, 32%)
CMYK	cmyk(0%, 65.4%, 84%, 68.2%)
CIE-LAB	lab(18.41, 23.88, 22.01)
CIE-LCH	lch(18.41, 32.48, 42.66°)
OKLab	oklab(30.57% 0.0672 0.0496)
OKLCH	oklch(30.57% 0.084 36.4)
XYZ	xyz(3.8817, 2.6094, 0.6800)
Luminance	0.0261 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511C0D #0D4251

analogous

#510D20 #511C0D #513E0D

triadic

#511C0D #0D511C #1C0D51

tetradic

#511C0D #20510D #0D4251 #3E0D51

square

#511C0D #20510D #0D4251 #3E0D51

split-complementary

#511C0D #0D513E #0D2051

monochromatic

#1A0904 #1C0A05 #511C0D #862E15 #BA401E

Accessibility & contrast

On white

13.80

#511C0D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#511C0D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511C0D

13.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511C0D	#FFFFFF	#000000	##FFFFFF
##511C0D	1.00	13.80	1.52	13.80
#FFFFFF	13.80	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B260B

Deuteranopia (green-blind)

#38310B

Tritanopia (blue-blind)

#5A0F19

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #511c0d;
/* rgb */ color: rgb(81, 28, 13);
/* oklch */ color: oklch(30.6% 0.084 36.4);

Tailwind

colors: {
  custom: {
    50: '#875a4d',
    500: '#511c0d',
    950: '#000000',
  },
}

SCSS

$custom: #511c0d;
$custom-light: #875a4d;
$custom-dark: #000000;

JSON

{
  "hex": "#511c0d",
  "rgb": {
    "r": 81,
    "g": 28,
    "b": 13
  },
  "hsl": {
    "h": 13.235,
    "s": 72.34,
    "l": 18.431
  },
  "oklch": {
    "l": 0.30565,
    "c": 0.08355,
    "h": 36.4
  },
  "luminance": 0.02609
}

Semantic roles & 50–950 ramp

primary

#511C0D

secondary

#2E778C

accent

#C7EF39

background

#F8F5F4

surface

#F0E9E7

border

#CBC5C3

text

#0C0401

muted

#7D7977

Preview Lab

Preview with #511C0D

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

Preview Lab → · Contrast checker → · Palette generator →