#511C21#511C21

#511C21 is a dark, moderate red. Relative luminance 0.027; OKLCH L 30.9% C 0.080 H 17.4°. Best body text is #FFFFFF at 13.65:1 contrast (WCAG AA passes).

Color values

HEX	#511C21
RGB	rgb(81, 28, 33)
HSL	hsl(354, 49%, 21%)
HSV	hsv(354, 65%, 32%)
CMYK	cmyk(0%, 65.4%, 59.3%, 68.2%)
CIE-LAB	lab(18.76, 25.30, 9.52)
CIE-LCH	lch(18.76, 27.03, 20.63°)
OKLab	oklab(30.94% 0.0759 0.0237)
OKLCH	oklch(30.94% 0.08 17.4)
XYZ	xyz(4.0834, 2.6901, 1.7428)
Luminance	0.0269 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511C21 #1C514C

analogous

#511C3C #511C21 #51321C

triadic

#511C21 #21511C #1C2151

tetradic

#511C21 #3C511C #1C514C #321C51

square

#511C21 #3C511C #1C514C #321C51

split-complementary

#511C21 #1C5132 #1C3C51

monochromatic

#170809 #240C0E #511C21 #7E2C34 #AC3B46

Accessibility & contrast

On white

13.65

#511C21 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#511C21 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511C21

13.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511C21	#FFFFFF	#000000	##FFFFFF
##511C21	1.00	13.65	1.54	13.65
#FFFFFF	13.65	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#282721

Deuteranopia (green-blind)

#363220

Tritanopia (blue-blind)

#59131E

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #511c21;
/* rgb */ color: rgb(81, 28, 33);
/* oklch */ color: oklch(30.9% 0.080 17.4);

Tailwind

colors: {
  custom: {
    50: '#865b5c',
    500: '#511c21',
    950: '#000000',
  },
}

SCSS

$custom: #511c21;
$custom-light: #865b5c;
$custom-dark: #000000;

JSON

{
  "hex": "#511c21",
  "rgb": {
    "r": 81,
    "g": 28,
    "b": 33
  },
  "hsl": {
    "h": 354.34,
    "s": 48.624,
    "l": 21.373
  },
  "oklch": {
    "l": 0.30943,
    "c": 0.0795,
    "h": 17.4
  },
  "luminance": 0.0269
}

Semantic roles & 50–950 ramp

primary

#511C21

secondary

#428780

accent

#D8CB50

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0404

muted

#7D7979

Preview Lab

Preview with #511C21

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

Preview Lab → · Contrast checker → · Palette generator →