#511A18#511A18

#511A18 is a dark, moderate red. Relative luminance 0.026; OKLCH L 30.4% C 0.083 H 25.4°. Best body text is #FFFFFF at 13.90:1 contrast (WCAG AA passes).

Color values

HEX	#511A18
RGB	rgb(81, 26, 24)
HSL	hsl(2, 54%, 21%)
HSV	hsv(2, 70%, 32%)
CMYK	cmyk(0%, 67.9%, 70.4%, 68.2%)
CIE-LAB	lab(18.16, 25.61, 15.02)
CIE-LCH	lch(18.16, 29.69, 30.39°)
OKLab	oklab(30.43% 0.0751 0.0356)
OKLCH	oklch(30.43% 0.083 25.4)
XYZ	xyz(3.9280, 2.5546, 1.1502)
Luminance	0.0255 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511A18 #184F51

analogous

#511832 #511A18 #513618

triadic

#511A18 #18511A #1A1851

tetradic

#511A18 #325118 #184F51 #361851

square

#511A18 #325118 #184F51 #361851

split-complementary

#511A18 #185136 #183251

monochromatic

#180807 #220B0A #511A18 #802926 #AF3834

Accessibility & contrast

On white

13.90

#511A18 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#511A18 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511A18

13.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511A18	#FFFFFF	#000000	##FFFFFF
##511A18	1.00	13.90	1.51	13.90
#FFFFFF	13.90	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#282517

Deuteranopia (green-blind)

#363117

Tritanopia (blue-blind)

#590E1A

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #511a18;
/* rgb */ color: rgb(81, 26, 24);
/* oklch */ color: oklch(30.4% 0.083 25.4);

Tailwind

colors: {
  custom: {
    50: '#875954',
    500: '#511a18',
    950: '#000000',
  },
}

SCSS

$custom: #511a18;
$custom-light: #875954;
$custom-dark: #000000;

JSON

{
  "hex": "#511a18",
  "rgb": {
    "r": 81,
    "g": 26,
    "b": 24
  },
  "hsl": {
    "h": 2.105,
    "s": 54.286,
    "l": 20.588
  },
  "oklch": {
    "l": 0.30434,
    "c": 0.08312,
    "h": 25.4
  },
  "luminance": 0.02554
}

Semantic roles & 50–950 ramp

primary

#511A18

secondary

#3D8588

accent

#D8DE4A

background

#F8F5F4

surface

#F0E9E7

border

#CBC5C3

text

#0C0402

muted

#7D7978

Preview Lab

Preview with #511A18

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

Preview Lab → · Contrast checker → · Palette generator →