#511B22#511B22

#511B22 is a dark, moderate red. Relative luminance 0.026; OKLCH L 30.8% C 0.081 H 15.4°. Best body text is #FFFFFF at 13.73:1 contrast (WCAG AA passes).

Color values

HEX	#511B22
RGB	rgb(81, 27, 34)
HSL	hsl(352, 50%, 21%)
HSV	hsv(352, 67%, 32%)
CMYK	cmyk(0%, 66.7%, 58%, 68.2%)
CIE-LAB	lab(18.58, 25.93, 8.58)
CIE-LCH	lch(18.58, 27.32, 18.30°)
OKLab	oklab(30.82% 0.078 0.0215)
OKLCH	oklch(30.82% 0.081 15.4)
XYZ	xyz(4.0743, 2.6492, 1.8099)
Luminance	0.0265 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B22 #1B514A

analogous

#511B3D #511B22 #512F1B

triadic

#511B22 #22511B #1B2251

tetradic

#511B22 #3D511B #1B514A #2F1B51

square

#511B22 #3D511B #1B514A #2F1B51

split-complementary

#511B22 #1B512F #1B3D51

monochromatic

#17080A #230C0F #511B22 #7F2A35 #AD3A49

Accessibility & contrast

On white

13.73

#511B22 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#511B22 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B22

13.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B22	#FFFFFF	#000000	##FFFFFF
##511B22	1.00	13.73	1.53	13.73
#FFFFFF	13.73	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#282622

Deuteranopia (green-blind)

#353121

Tritanopia (blue-blind)

#59121E

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #511b22;
/* rgb */ color: rgb(81, 27, 34);
/* oklch */ color: oklch(30.8% 0.081 15.4);

Tailwind

colors: {
  custom: {
    50: '#865a5c',
    500: '#511b22',
    950: '#000000',
  },
}

SCSS

$custom: #511b22;
$custom-light: #865a5c;
$custom-dark: #000000;

JSON

{
  "hex": "#511b22",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 34
  },
  "hsl": {
    "h": 352.222,
    "s": 50,
    "l": 21.176
  },
  "oklch": {
    "l": 0.30818,
    "c": 0.08095,
    "h": 15.4
  },
  "luminance": 0.02649
}

Semantic roles & 50–950 ramp

primary

#511B22

secondary

#41877E

accent

#DAC74E

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0404

muted

#7D7979

Preview Lab

Preview with #511B22

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

Preview Lab → · Contrast checker → · Palette generator →