#511B0F#511B0F

#511B0F is a dark, moderate red. Relative luminance 0.026; OKLCH L 30.4% C 0.084 H 34.1°. Best body text is #FFFFFF at 13.87:1 contrast (WCAG AA passes).

Color values

HEX	#511B0F
RGB	rgb(81, 27, 15)
HSL	hsl(11, 69%, 19%)
HSV	hsv(11, 81%, 32%)
CMYK	cmyk(0%, 66.7%, 81.5%, 68.2%)
CIE-LAB	lab(18.22, 24.52, 20.78)
CIE-LCH	lch(18.22, 32.15, 40.28°)
OKLab	oklab(30.44% 0.0697 0.0471)
OKLCH	oklch(30.44% 0.084 34.1)
XYZ	xyz(3.8719, 2.5682, 0.7437)
Luminance	0.0257 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B0F #0F4551

analogous

#510F24 #511B0F #513C0F

triadic

#511B0F #0F511B #1B0F51

tetradic

#511B0F #24510F #0F4551 #3C0F51

square

#511B0F #24510F #0F4551 #3C0F51

split-complementary

#511B0F #0F513C #0F2451

monochromatic

#1A0905 #1D0A05 #511B0F #852C19 #B83D22

Accessibility & contrast

On white

13.87

#511B0F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#511B0F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B0F

13.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B0F	#FFFFFF	#000000	##FFFFFF
##511B0F	1.00	13.87	1.51	13.87
#FFFFFF	13.87	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A250D

Deuteranopia (green-blind)

#37310D

Tritanopia (blue-blind)

#5A0E18

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #511b0f;
/* rgb */ color: rgb(81, 27, 15);
/* oklch */ color: oklch(30.4% 0.084 34.1);

Tailwind

colors: {
  custom: {
    50: '#875a4e',
    500: '#511b0f',
    950: '#000000',
  },
}

SCSS

$custom: #511b0f;
$custom-light: #875a4e;
$custom-dark: #000000;

JSON

{
  "hex": "#511b0f",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 15
  },
  "hsl": {
    "h": 10.909,
    "s": 68.75,
    "l": 18.824
  },
  "oklch": {
    "l": 0.30435,
    "c": 0.08407,
    "h": 34.1
  },
  "luminance": 0.02568
}

Semantic roles & 50–950 ramp

primary

#511B0F

secondary

#317B8B

accent

#CCEC3C

background

#F8F5F4

surface

#F0E9E7

border

#CBC5C3

text

#0C0401

muted

#7D7977

Preview Lab

Preview with #511B0F

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

Preview Lab → · Contrast checker → · Palette generator →