#511D21#511D21

#511D21 is a dark, moderate red. Relative luminance 0.027; OKLCH L 31.1% C 0.078 H 18.2°. Best body text is #FFFFFF at 13.57:1 contrast (WCAG AA passes).

Color values

HEX	#511D21
RGB	rgb(81, 29, 33)
HSL	hsl(355, 47%, 22%)
HSV	hsv(355, 64%, 32%)
CMYK	cmyk(0%, 64.2%, 59.3%, 68.2%)
CIE-LAB	lab(18.96, 24.76, 9.80)
CIE-LCH	lch(18.96, 26.63, 21.60°)
OKLab	oklab(31.1% 0.0741 0.0244)
OKLCH	oklch(31.1% 0.078 18.2)
XYZ	xyz(4.1076, 2.7384, 1.7508)
Luminance	0.0274 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511D21 #1D514D

analogous

#511D3B #511D21 #51331D

triadic

#511D21 #21511D #1D2151

tetradic

#511D21 #3B511D #1D514D #331D51

square

#511D21 #3B511D #1D514D #331D51

split-complementary

#511D21 #1D5133 #1D3B51

monochromatic

#170809 #240D0F #511D21 #7E2D33 #AB3D46

Accessibility & contrast

On white

13.57

#511D21 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#511D21 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511D21

13.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511D21	#FFFFFF	#000000	##FFFFFF
##511D21	1.00	13.57	1.55	13.57
#FFFFFF	13.57	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#292721

Deuteranopia (green-blind)

#363220

Tritanopia (blue-blind)

#59141F

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #511d21;
/* rgb */ color: rgb(81, 29, 33);
/* oklch */ color: oklch(31.1% 0.078 18.2);

Tailwind

colors: {
  custom: {
    50: '#865b5c',
    500: '#511d21',
    950: '#000000',
  },
}

SCSS

$custom: #511d21;
$custom-light: #865b5c;
$custom-dark: #000000;

JSON

{
  "hex": "#511d21",
  "rgb": {
    "r": 81,
    "g": 29,
    "b": 33
  },
  "hsl": {
    "h": 355.385,
    "s": 47.273,
    "l": 21.569
  },
  "oklch": {
    "l": 0.31098,
    "c": 0.07806,
    "h": 18.2
  },
  "luminance": 0.02738
}

Semantic roles & 50–950 ramp

primary

#511D21

secondary

#448681

accent

#D7CD51

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0404

muted

#7D7979

Preview Lab

Preview with #511D21

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

Preview Lab → · Contrast checker → · Palette generator →