#511B0C#511B0C

#511B0C is a dark, moderate red. Relative luminance 0.026; OKLCH L 30.4% C 0.085 H 36.2°. Best body text is #FFFFFF at 13.89:1 contrast (WCAG AA passes).

Color values

HEX	#511B0C
RGB	rgb(81, 27, 12)
HSL	hsl(13, 74%, 18%)
HSV	hsv(13, 85%, 32%)
CMYK	cmyk(0%, 66.7%, 85.2%, 68.2%)
CIE-LAB	lab(18.19, 24.38, 22.22)
CIE-LCH	lch(18.19, 32.99, 42.35°)
OKLab	oklab(30.4% 0.0686 0.0501)
OKLCH	oklch(30.4% 0.085 36.2)
XYZ	xyz(3.8520, 2.5603, 0.6391)
Luminance	0.0256 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B0C #0C4251

analogous

#510C1F #511B0C #513D0C

triadic

#511B0C #0C511B #1B0C51

tetradic

#511B0C #1F510C #0C4251 #3D0C51

square

#511B0C #1F510C #0C4251 #3D0C51

split-complementary

#511B0C #0C513D #0C1F51

monochromatic

#1B0904 #1C0904 #511B0C #862D14 #BC3F1C

Accessibility & contrast

On white

13.89

#511B0C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#511B0C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B0C

13.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B0C	#FFFFFF	#000000	##FFFFFF
##511B0C	1.00	13.89	1.51	13.89
#FFFFFF	13.89	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A250A

Deuteranopia (green-blind)

#37310A

Tritanopia (blue-blind)

#5A0E18

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #511b0c;
/* rgb */ color: rgb(81, 27, 12);
/* oklch */ color: oklch(30.4% 0.085 36.2);

Tailwind

colors: {
  custom: {
    50: '#875a4c',
    500: '#511b0c',
    950: '#000000',
  },
}

SCSS

$custom: #511b0c;
$custom-light: #875a4c;
$custom-dark: #000000;

JSON

{
  "hex": "#511b0c",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 12
  },
  "hsl": {
    "h": 13.043,
    "s": 74.194,
    "l": 18.235
  },
  "oklch": {
    "l": 0.30397,
    "c": 0.08492,
    "h": 36.2
  },
  "luminance": 0.0256
}

Semantic roles & 50–950 ramp

primary

#511B0C

secondary

#2C788C

accent

#C8F137

background

#F8F5F4

surface

#F0E9E7

border

#CBC5C3

text

#0C0401

muted

#7D7977

Preview Lab

Preview with #511B0C

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

Preview Lab → · Contrast checker → · Palette generator →