#511D1E#511D1E

#511D1E is a dark, moderate red. Relative luminance 0.027; OKLCH L 31.0% C 0.078 H 21.7°. Best body text is #FFFFFF at 13.60:1 contrast (WCAG AA passes).

Color values

HEX	#511D1E
RGB	rgb(81, 29, 30)
HSL	hsl(359, 47%, 22%)
HSV	hsv(359, 64%, 32%)
CMYK	cmyk(0%, 64.2%, 63%, 68.2%)
CIE-LAB	lab(18.90, 24.48, 11.80)
CIE-LCH	lch(18.90, 27.18, 25.75°)
OKLab	oklab(31.02% 0.0728 0.0289)
OKLCH	oklch(31.02% 0.078 21.7)
XYZ	xyz(4.0674, 2.7223, 1.5393)
Luminance	0.0272 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511D1E #1D5150

analogous

#511D38 #511D1E #51361D

triadic

#511D1E #1E511D #1D1E51

tetradic

#511D1E #38511D #1D5150 #361D51

square

#511D1E #38511D #1D5150 #361D51

split-complementary

#511D1E #1D5136 #1D3851

monochromatic

#170808 #240D0D #511D1E #7E2D2F #AB3D3F

Accessibility & contrast

On white

13.60

#511D1E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#511D1E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511D1E

13.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511D1E	#FFFFFF	#000000	##FFFFFF
##511D1E	1.00	13.60	1.54	13.60
#FFFFFF	13.60	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A271E

Deuteranopia (green-blind)

#37321D

Tritanopia (blue-blind)

#59141E

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #511d1e;
/* rgb */ color: rgb(81, 29, 30);
/* oklch */ color: oklch(31.0% 0.078 21.7);

Tailwind

colors: {
  custom: {
    50: '#865b59',
    500: '#511d1e',
    950: '#000000',
  },
}

SCSS

$custom: #511d1e;
$custom-light: #865b59;
$custom-dark: #000000;

JSON

{
  "hex": "#511d1e",
  "rgb": {
    "r": 81,
    "g": 29,
    "b": 30
  },
  "hsl": {
    "h": 358.846,
    "s": 47.273,
    "l": 21.569
  },
  "oklch": {
    "l": 0.31024,
    "c": 0.07828,
    "h": 21.7
  },
  "luminance": 0.02722
}

Semantic roles & 50–950 ramp

primary

#511D1E

secondary

#448685

accent

#D7D451

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0403

muted

#7D7978

Preview Lab

Preview with #511D1E

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

Preview Lab → · Contrast checker → · Palette generator →