#511A21#511A21

#511A21 is a dark, moderate red. Relative luminance 0.026; OKLCH L 30.6% C 0.082 H 15.8°. Best body text is #FFFFFF at 13.82:1 contrast (WCAG AA passes).

Color values

HEX	#511A21
RGB	rgb(81, 26, 33)
HSL	hsl(352, 51%, 21%)
HSV	hsv(352, 68%, 32%)
CMYK	cmyk(0%, 67.9%, 59.3%, 68.2%)
CIE-LAB	lab(18.36, 26.37, 8.98)
CIE-LCH	lch(18.36, 27.85, 18.81°)
OKLab	oklab(30.64% 0.0792 0.0225)
OKLCH	oklch(30.64% 0.082 15.8)
XYZ	xyz(4.0376, 2.5984, 1.7275)
Luminance	0.0260 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511A21 #1A514A

analogous

#511A3C #511A21 #512E1A

triadic

#511A21 #21511A #1A2151

tetradic

#511A21 #3C511A #1A514A #2E1A51

square

#511A21 #3C511A #1A514A #2E1A51

split-complementary

#511A21 #1A512E #1A3C51

monochromatic

#170709 #230B0E #511A21 #7F2934 #AE3847

Accessibility & contrast

On white

13.82

#511A21 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#511A21 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511A21

13.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511A21	#FFFFFF	#000000	##FFFFFF
##511A21	1.00	13.82	1.52	13.82
#FFFFFF	13.82	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#272621

Deuteranopia (green-blind)

#353120

Tritanopia (blue-blind)

#59111D

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #511a21;
/* rgb */ color: rgb(81, 26, 33);
/* oklch */ color: oklch(30.6% 0.082 15.8);

Tailwind

colors: {
  custom: {
    50: '#865a5c',
    500: '#511a21',
    950: '#000000',
  },
}

SCSS

$custom: #511a21;
$custom-light: #865a5c;
$custom-dark: #000000;

JSON

{
  "hex": "#511a21",
  "rgb": {
    "r": 81,
    "g": 26,
    "b": 33
  },
  "hsl": {
    "h": 352.364,
    "s": 51.402,
    "l": 20.98
  },
  "oklch": {
    "l": 0.30643,
    "c": 0.08236,
    "h": 15.8
  },
  "luminance": 0.02598
}

Semantic roles & 50–950 ramp

primary

#511A21

secondary

#40877E

accent

#DBC94D

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0404

muted

#7D7979

Preview Lab

Preview with #511A21

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

Preview Lab → · Contrast checker → · Palette generator →