#511D1C#511D1C

#511D1C is a dark, moderate red. Relative luminance 0.027; OKLCH L 31.0% C 0.079 H 23.9°. Best body text is #FFFFFF at 13.62:1 contrast (WCAG AA passes).

Color values

HEX	#511D1C
RGB	rgb(81, 29, 28)
HSL	hsl(1, 49%, 21%)
HSV	hsv(1, 65%, 32%)
CMYK	cmyk(0%, 64.2%, 65.4%, 68.2%)
CIE-LAB	lab(18.85, 24.31, 13.14)
CIE-LCH	lch(18.85, 27.63, 28.39°)
OKLab	oklab(30.98% 0.0718 0.0318)
OKLCH	oklch(30.98% 0.079 23.9)
XYZ	xyz(4.0427, 2.7124, 1.4090)
Luminance	0.0271 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511D1C #1C5051

analogous

#511C36 #511D1C #51381C

triadic

#511D1C #1C511D #1D1C51

tetradic

#511D1C #36511C #1C5051 #381C51

square

#511D1C #36511C #1C5051 #381C51

split-complementary

#511D1C #1C5138 #1C3651

monochromatic

#170808 #240D0C #511D1C #7E2D2C #AC3E3B

Accessibility & contrast

On white

13.62

#511D1C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#511D1C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511D1C

13.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511D1C	#FFFFFF	#000000	##FFFFFF
##511D1C	1.00	13.62	1.54	13.62
#FFFFFF	13.62	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A271C

Deuteranopia (green-blind)

#37321B

Tritanopia (blue-blind)

#59131D

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #511d1c;
/* rgb */ color: rgb(81, 29, 28);
/* oklch */ color: oklch(31.0% 0.079 23.9);

Tailwind

colors: {
  custom: {
    50: '#865b58',
    500: '#511d1c',
    950: '#000000',
  },
}

SCSS

$custom: #511d1c;
$custom-light: #865b58;
$custom-dark: #000000;

JSON

{
  "hex": "#511d1c",
  "rgb": {
    "r": 81,
    "g": 29,
    "b": 28
  },
  "hsl": {
    "h": 1.132,
    "s": 48.624,
    "l": 21.373
  },
  "oklch": {
    "l": 0.30979,
    "c": 0.07856,
    "h": 23.9
  },
  "luminance": 0.02712
}

Semantic roles & 50–950 ramp

primary

#511D1C

secondary

#428587

accent

#D6D850

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0403

muted

#7D7978

Preview Lab

Preview with #511D1C

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

Preview Lab → · Contrast checker → · Palette generator →