#511B24#511B24

#511B24 is a dark, moderate red. Relative luminance 0.027; OKLCH L 30.9% C 0.081 H 13.1°. Best body text is #FFFFFF at 13.71:1 contrast (WCAG AA passes).

Color values

HEX	#511B24
RGB	rgb(81, 27, 36)
HSL	hsl(350, 50%, 21%)
HSV	hsv(350, 67%, 32%)
CMYK	cmyk(0%, 66.7%, 55.6%, 68.2%)
CIE-LAB	lab(18.63, 26.14, 7.24)
CIE-LCH	lch(18.63, 27.12, 15.48°)
OKLab	oklab(30.87% 0.079 0.0184)
OKLCH	oklch(30.87% 0.081 13.1)
XYZ	xyz(4.1040, 2.6611, 1.9662)
Luminance	0.0266 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B24 #1B5148

analogous

#511B3F #511B24 #512D1B

triadic

#511B24 #24511B #1B2451

tetradic

#511B24 #3F511B #1B5148 #2D1B51

square

#511B24 #3F511B #1B5148 #2D1B51

split-complementary

#511B24 #1B512D #1B3F51

monochromatic

#17080A #230C10 #511B24 #7F2A38 #AD3A4D

Accessibility & contrast

On white

13.71

#511B24 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#511B24 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B24

13.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B24	#FFFFFF	#000000	##FFFFFF
##511B24	1.00	13.71	1.53	13.71
#FFFFFF	13.71	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#272624

Deuteranopia (green-blind)

#353123

Tritanopia (blue-blind)

#59131E

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #511b24;
/* rgb */ color: rgb(81, 27, 36);
/* oklch */ color: oklch(30.9% 0.081 13.1);

Tailwind

colors: {
  custom: {
    50: '#855a5e',
    500: '#511b24',
    950: '#000000',
  },
}

SCSS

$custom: #511b24;
$custom-light: #855a5e;
$custom-dark: #000000;

JSON

{
  "hex": "#511b24",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 36
  },
  "hsl": {
    "h": 350,
    "s": 50,
    "l": 21.176
  },
  "oklch": {
    "l": 0.30873,
    "c": 0.08106,
    "h": 13.1
  },
  "luminance": 0.02661
}

Semantic roles & 50–950 ramp

primary

#511B24

secondary

#41877B

accent

#DAC24E

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0B0404

muted

#7C7979

Preview Lab

Preview with #511B24

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

Preview Lab → · Contrast checker → · Palette generator →