#511B13#511B13

#511B13 is a dark, moderate red. Relative luminance 0.026; OKLCH L 30.5% C 0.083 H 30.9°. Best body text is #FFFFFF at 13.85:1 contrast (WCAG AA passes).

Color values

HEX	#511B13
RGB	rgb(81, 27, 19)
HSL	hsl(8, 62%, 20%)
HSV	hsv(8, 77%, 32%)
CMYK	cmyk(0%, 66.7%, 76.5%, 68.2%)
CIE-LAB	lab(18.28, 24.75, 18.52)
CIE-LCH	lch(18.28, 30.91, 36.81°)
OKLab	oklab(30.5% 0.0712 0.0426)
OKLCH	oklch(30.5% 0.083 30.9)
XYZ	xyz(3.9032, 2.5807, 0.9086)
Luminance	0.0258 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B13 #134951

analogous

#51132A #511B13 #513A13

triadic

#511B13 #13511B #1B1351

tetradic

#511B13 #2A5113 #134951 #3A1351

square

#511B13 #2A5113 #134951 #3A1351

split-complementary

#511B13 #13513A #132A51

monochromatic

#190806 #1F0A07 #511B13 #832C1F #B43C2A

Accessibility & contrast

On white

13.85

#511B13 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#511B13 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B13

13.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B13	#FFFFFF	#000000	##FFFFFF
##511B13	1.00	13.85	1.52	13.85
#FFFFFF	13.85	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A2512

Deuteranopia (green-blind)

#373111

Tritanopia (blue-blind)

#5A0F19

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #511b13;
/* rgb */ color: rgb(81, 27, 19);
/* oklch */ color: oklch(30.5% 0.083 30.9);

Tailwind

colors: {
  custom: {
    50: '#875a51',
    500: '#511b13',
    950: '#000000',
  },
}

SCSS

$custom: #511b13;
$custom-light: #875a51;
$custom-dark: #000000;

JSON

{
  "hex": "#511b13",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 19
  },
  "hsl": {
    "h": 7.742,
    "s": 62,
    "l": 19.608
  },
  "oklch": {
    "l": 0.30495,
    "c": 0.08299,
    "h": 30.9
  },
  "luminance": 0.0258
}

Semantic roles & 50–950 ramp

primary

#511B13

secondary

#367F8A

accent

#D0E543

background

#F8F5F4

surface

#F0E9E7

border

#CBC5C3

text

#0C0402

muted

#7D7978

Preview Lab

Preview with #511B13

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

Preview Lab → · Contrast checker → · Palette generator →