#511B20#511B20

#511B20 is a dark, moderate red. Relative luminance 0.026; OKLCH L 30.8% C 0.081 H 17.7°. Best body text is #FFFFFF at 13.75:1 contrast (WCAG AA passes).

Color values

HEX	#511B20
RGB	rgb(81, 27, 32)
HSL	hsl(354, 50%, 21%)
HSV	hsv(354, 67%, 32%)
CMYK	cmyk(0%, 66.7%, 60.5%, 68.2%)
CIE-LAB	lab(18.53, 25.74, 9.92)
CIE-LCH	lch(18.53, 27.59, 21.08°)
OKLab	oklab(30.76% 0.0771 0.0246)
OKLCH	oklch(30.76% 0.081 17.7)
XYZ	xyz(4.0463, 2.6380, 1.6623)
Luminance	0.0264 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B20 #1B514C

analogous

#511B3B #511B20 #51311B

triadic

#511B20 #20511B #1B2051

tetradic

#511B20 #3B511B #1B514C #311B51

square

#511B20 #3B511B #1B514C #311B51

split-complementary

#511B20 #1B5131 #1B3B51

monochromatic

#170809 #230C0E #511B20 #7F2A32 #AD3A44

Accessibility & contrast

On white

13.75

#511B20 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#511B20 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B20

13.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B20	#FFFFFF	#000000	##FFFFFF
##511B20	1.00	13.75	1.53	13.75
#FFFFFF	13.75	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#282620

Deuteranopia (green-blind)

#36311F

Tritanopia (blue-blind)

#59121D

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #511b20;
/* rgb */ color: rgb(81, 27, 32);
/* oklch */ color: oklch(30.8% 0.081 17.7);

Tailwind

colors: {
  custom: {
    50: '#865a5b',
    500: '#511b20',
    950: '#000000',
  },
}

SCSS

$custom: #511b20;
$custom-light: #865a5b;
$custom-dark: #000000;

JSON

{
  "hex": "#511b20",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 32
  },
  "hsl": {
    "h": 354.444,
    "s": 50,
    "l": 21.176
  },
  "oklch": {
    "l": 0.30765,
    "c": 0.08094,
    "h": 17.7
  },
  "luminance": 0.02637
}

Semantic roles & 50–950 ramp

primary

#511B20

secondary

#418780

accent

#DACD4E

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0404

muted

#7D7979

Preview Lab

Preview with #511B20

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

Preview Lab → · Contrast checker → · Palette generator →