#511B1E#511B1E

#511B1E is a dark, moderate red. Relative luminance 0.026; OKLCH L 30.7% C 0.081 H 19.9°. Best body text is #FFFFFF at 13.77:1 contrast (WCAG AA passes).

Color values

HEX	#511B1E
RGB	rgb(81, 27, 30)
HSL	hsl(357, 50%, 21%)
HSV	hsv(357, 67%, 32%)
CMYK	cmyk(0%, 66.7%, 63%, 68.2%)
CIE-LAB	lab(18.49, 25.56, 11.26)
CIE-LCH	lch(18.49, 27.94, 23.78°)
OKLab	oklab(30.72% 0.0762 0.0277)
OKLCH	oklch(30.72% 0.081 19.9)
XYZ	xyz(4.0200, 2.6274, 1.5235)
Luminance	0.0263 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B1E #1B514E

analogous

#511B39 #511B1E #51331B

triadic

#511B1E #1E511B #1B1E51

tetradic

#511B1E #39511B #1B514E #331B51

square

#511B1E #39511B #1B514E #331B51

split-complementary

#511B1E #1B5133 #1B3951

monochromatic

#170808 #230C0D #511B1E #7F2A2F #AD3A40

Accessibility & contrast

On white

13.77

#511B1E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#511B1E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B1E

13.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B1E	#FFFFFF	#000000	##FFFFFF
##511B1E	1.00	13.77	1.53	13.77
#FFFFFF	13.77	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#28261E

Deuteranopia (green-blind)

#36311D

Tritanopia (blue-blind)

#59111C

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #511b1e;
/* rgb */ color: rgb(81, 27, 30);
/* oklch */ color: oklch(30.7% 0.081 19.9);

Tailwind

colors: {
  custom: {
    50: '#865a59',
    500: '#511b1e',
    950: '#000000',
  },
}

SCSS

$custom: #511b1e;
$custom-light: #865a59;
$custom-dark: #000000;

JSON

{
  "hex": "#511b1e",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 30
  },
  "hsl": {
    "h": 356.667,
    "s": 50,
    "l": 21.176
  },
  "oklch": {
    "l": 0.30716,
    "c": 0.08104,
    "h": 19.9
  },
  "luminance": 0.02627
}

Semantic roles & 50–950 ramp

primary

#511B1E

secondary

#418783

accent

#DAD24E

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0403

muted

#7D7978

Preview Lab

Preview with #511B1E

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

Preview Lab → · Contrast checker → · Palette generator →