#511D11#511D11

#511D11 is a dark, moderate red. Relative luminance 0.027; OKLCH L 30.8% C 0.081 H 34.4°. Best body text is #FFFFFF at 13.69:1 contrast (WCAG AA passes).

Color values

HEX	#511D11
RGB	rgb(81, 29, 17)
HSL	hsl(11, 65%, 19%)
HSV	hsv(11, 79%, 32%)
CMYK	cmyk(0%, 64.2%, 79%, 68.2%)
CIE-LAB	lab(18.67, 23.53, 20.19)
CIE-LCH	lch(18.67, 31.01, 40.63°)
OKLab	oklab(30.78% 0.067 0.0459)
OKLCH	oklch(30.78% 0.081 34.4)
XYZ	xyz(3.9343, 2.6691, 0.8382)
Luminance	0.0267 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511D11 #114551

analogous

#511125 #511D11 #513D11

triadic

#511D11 #11511D #1D1151

tetradic

#511D11 #255111 #114551 #3D1151

square

#511D11 #255111 #114551 #3D1151

split-complementary

#511D11 #11513D #112551

monochromatic

#190905 #1E0B06 #511D11 #842F1C #B64126

Accessibility & contrast

On white

13.69

#511D11 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#511D11 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511D11

13.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511D11	#FFFFFF	#000000	##FFFFFF
##511D11	1.00	13.69	1.53	13.69
#FFFFFF	13.69	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B2610

Deuteranopia (green-blind)

#383210

Tritanopia (blue-blind)

#5A111A

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #511d11;
/* rgb */ color: rgb(81, 29, 17);
/* oklch */ color: oklch(30.8% 0.081 34.4);

Tailwind

colors: {
  custom: {
    50: '#875b4f',
    500: '#511d11',
    950: '#000000',
  },
}

SCSS

$custom: #511d11;
$custom-light: #875b4f;
$custom-dark: #000000;

JSON

{
  "hex": "#511d11",
  "rgb": {
    "r": 81,
    "g": 29,
    "b": 17
  },
  "hsl": {
    "h": 11.25,
    "s": 65.306,
    "l": 19.216
  },
  "oklch": {
    "l": 0.30777,
    "c": 0.08125,
    "h": 34.4
  },
  "luminance": 0.02669
}

Semantic roles & 50–950 ramp

primary

#511D11

secondary

#347A8A

accent

#C9E840

background

#F8F5F4

surface

#F0E9E7

border

#CBC5C3

text

#0C0402

muted

#7D7978

Preview Lab

Preview with #511D11

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

Preview Lab → · Contrast checker → · Palette generator →