#511E21#511E21

#511E21 is a dark, moderate red. Relative luminance 0.028; OKLCH L 31.3% C 0.077 H 19.1°. Best body text is #FFFFFF at 13.48:1 contrast (WCAG AA passes).

Color values

HEX	#511E21
RGB	rgb(81, 30, 33)
HSL	hsl(356, 46%, 22%)
HSV	hsv(356, 63%, 32%)
CMYK	cmyk(0%, 63%, 59.3%, 68.2%)
CIE-LAB	lab(19.17, 24.20, 10.09)
CIE-LCH	lch(19.17, 26.22, 22.62°)
OKLab	oklab(31.26% 0.0724 0.0251)
OKLCH	oklch(31.26% 0.077 19.1)
XYZ	xyz(4.1325, 2.7882, 1.7591)
Luminance	0.0279 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511E21 #1E514E

analogous

#511E3B #511E21 #51351E

triadic

#511E21 #21511E #1E2151

tetradic

#511E21 #3B511E #1E514E #351E51

square

#511E21 #3B511E #1E514E #351E51

split-complementary

#511E21 #1E5135 #1E3B51

monochromatic

#160809 #240D0F #511E21 #7E2F33 #AA3F45

Accessibility & contrast

On white

13.48

#511E21 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#511E21 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511E21

13.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511E21	#FFFFFF	#000000	##FFFFFF
##511E21	1.00	13.48	1.56	13.48
#FFFFFF	13.48	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A2821

Deuteranopia (green-blind)

#373320

Tritanopia (blue-blind)

#59161F

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #511e21;
/* rgb */ color: rgb(81, 30, 33);
/* oklch */ color: oklch(31.3% 0.077 19.1);

Tailwind

colors: {
  custom: {
    50: '#855c5c',
    500: '#511e21',
    950: '#000000',
  },
}

SCSS

$custom: #511e21;
$custom-light: #855c5c;
$custom-dark: #000000;

JSON

{
  "hex": "#511e21",
  "rgb": {
    "r": 81,
    "g": 30,
    "b": 33
  },
  "hsl": {
    "h": 356.471,
    "s": 45.946,
    "l": 21.765
  },
  "oklch": {
    "l": 0.31257,
    "c": 0.07663,
    "h": 19.1
  },
  "luminance": 0.02788
}

Semantic roles & 50–950 ramp

primary

#511E21

secondary

#458682

accent

#D6CE52

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0404

muted

#7D7979

Preview Lab

Preview with #511E21

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

Preview Lab → · Contrast checker → · Palette generator →