#511C1E#511C1E

#511C1E is a dark, moderate red. Relative luminance 0.027; OKLCH L 30.9% C 0.080 H 20.8°. Best body text is #FFFFFF at 13.68:1 contrast (WCAG AA passes).

Color values

HEX	#511C1E
RGB	rgb(81, 28, 30)
HSL	hsl(358, 49%, 21%)
HSV	hsv(358, 65%, 32%)
CMYK	cmyk(0%, 65.4%, 63%, 68.2%)
CIE-LAB	lab(18.69, 25.02, 11.53)
CIE-LCH	lch(18.69, 27.55, 24.74°)
OKLab	oklab(30.87% 0.0745 0.0283)
OKLCH	oklch(30.87% 0.08 20.8)
XYZ	xyz(4.0433, 2.6741, 1.5313)
Luminance	0.0267 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511C1E #1C514F

analogous

#511C39 #511C1E #51351C

triadic

#511C1E #1E511C #1C1E51

tetradic

#511C1E #39511C #1C514F #351C51

square

#511C1E #39511C #1C514F #351C51

split-complementary

#511C1E #1C5135 #1C3951

monochromatic

#170808 #240C0D #511C1E #7E2C2F #AC3B40

Accessibility & contrast

On white

13.68

#511C1E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#511C1E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511C1E

13.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511C1E	#FFFFFF	#000000	##FFFFFF
##511C1E	1.00	13.68	1.53	13.68
#FFFFFF	13.68	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#29271E

Deuteranopia (green-blind)

#36321D

Tritanopia (blue-blind)

#59121D

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #511c1e;
/* rgb */ color: rgb(81, 28, 30);
/* oklch */ color: oklch(30.9% 0.080 20.8);

Tailwind

colors: {
  custom: {
    50: '#865b59',
    500: '#511c1e',
    950: '#000000',
  },
}

SCSS

$custom: #511c1e;
$custom-light: #865b59;
$custom-dark: #000000;

JSON

{
  "hex": "#511c1e",
  "rgb": {
    "r": 81,
    "g": 28,
    "b": 30
  },
  "hsl": {
    "h": 357.736,
    "s": 48.624,
    "l": 21.373
  },
  "oklch": {
    "l": 0.30868,
    "c": 0.07966,
    "h": 20.8
  },
  "luminance": 0.02674
}

Semantic roles & 50–950 ramp

primary

#511C1E

secondary

#428784

accent

#D8D350

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0403

muted

#7D7978

Preview Lab

Preview with #511C1E

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

Preview Lab → · Contrast checker → · Palette generator →