#511B17#511B17

#511B17 is a dark, moderate red. Relative luminance 0.026; OKLCH L 30.6% C 0.082 H 27.2°. Best body text is #FFFFFF at 13.82:1 contrast (WCAG AA passes).

Color values

HEX	#511B17
RGB	rgb(81, 27, 23)
HSL	hsl(4, 56%, 20%)
HSV	hsv(4, 72%, 32%)
CMYK	cmyk(0%, 66.7%, 71.6%, 68.2%)
CIE-LAB	lab(18.35, 25.01, 15.93)
CIE-LCH	lch(18.35, 29.65, 32.50°)
OKLab	oklab(30.57% 0.073 0.0375)
OKLCH	oklch(30.57% 0.082 27.2)
XYZ	xyz(3.9403, 2.5956, 1.1040)
Luminance	0.0260 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B17 #174D51

analogous

#511730 #511B17 #513817

triadic

#511B17 #17511B #1B1751

tetradic

#511B17 #305117 #174D51 #381751

square

#511B17 #305117 #174D51 #381751

split-complementary

#511B17 #175138 #173051

monochromatic

#180807 #210B09 #511B17 #812B25 #B03B32

Accessibility & contrast

On white

13.82

#511B17 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#511B17 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B17

13.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B17	#FFFFFF	#000000	##FFFFFF
##511B17	1.00	13.82	1.52	13.82
#FFFFFF	13.82	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#292516

Deuteranopia (green-blind)

#373116

Tritanopia (blue-blind)

#59101A

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #511b17;
/* rgb */ color: rgb(81, 27, 23);
/* oklch */ color: oklch(30.6% 0.082 27.2);

Tailwind

colors: {
  custom: {
    50: '#875a54',
    500: '#511b17',
    950: '#000000',
  },
}

SCSS

$custom: #511b17;
$custom-light: #875a54;
$custom-dark: #000000;

JSON

{
  "hex": "#511b17",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 23
  },
  "hsl": {
    "h": 4.138,
    "s": 55.769,
    "l": 20.392
  },
  "oklch": {
    "l": 0.30565,
    "c": 0.08206,
    "h": 27.2
  },
  "luminance": 0.02595
}

Semantic roles & 50–950 ramp

primary

#511B17

secondary

#3C8388

accent

#D5DF49

background

#F8F5F4

surface

#F0E9E7

border

#CBC5C3

text

#0C0402

muted

#7D7978

Preview Lab

Preview with #511B17

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

Preview Lab → · Contrast checker → · Palette generator →