#511B23#511B23

#511B23 is a dark, moderate red. Relative luminance 0.027; OKLCH L 30.8% C 0.081 H 14.3°. Best body text is #FFFFFF at 13.72:1 contrast (WCAG AA passes).

Color values

HEX	#511B23
RGB	rgb(81, 27, 35)
HSL	hsl(351, 50%, 21%)
HSV	hsv(351, 67%, 32%)
CMYK	cmyk(0%, 66.7%, 56.8%, 68.2%)
CIE-LAB	lab(18.61, 26.03, 7.91)
CIE-LCH	lch(18.61, 27.21, 16.90°)
OKLab	oklab(30.85% 0.0785 0.02)
OKLCH	oklch(30.85% 0.081 14.3)
XYZ	xyz(4.0890, 2.6551, 1.8869)
Luminance	0.0266 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B23 #1B5149

analogous

#511B3E #511B23 #512E1B

triadic

#511B23 #23511B #1B2351

tetradic

#511B23 #3E511B #1B5149 #2E1B51

square

#511B23 #3E511B #1B5149 #2E1B51

split-complementary

#511B23 #1B512E #1B3E51

monochromatic

#17080A #230C0F #511B23 #7F2A37 #AD3A4B

Accessibility & contrast

On white

13.72

#511B23 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#511B23 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B23

13.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B23	#FFFFFF	#000000	##FFFFFF
##511B23	1.00	13.72	1.53	13.72
#FFFFFF	13.72	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#272623

Deuteranopia (green-blind)

#353122

Tritanopia (blue-blind)

#59121E

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #511b23;
/* rgb */ color: rgb(81, 27, 35);
/* oklch */ color: oklch(30.8% 0.081 14.3);

Tailwind

colors: {
  custom: {
    50: '#855a5d',
    500: '#511b23',
    950: '#000000',
  },
}

SCSS

$custom: #511b23;
$custom-light: #855a5d;
$custom-dark: #000000;

JSON

{
  "hex": "#511b23",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 35
  },
  "hsl": {
    "h": 351.111,
    "s": 50,
    "l": 21.176
  },
  "oklch": {
    "l": 0.30845,
    "c": 0.08099,
    "h": 14.3
  },
  "luminance": 0.02655
}

Semantic roles & 50–950 ramp

primary

#511B23

secondary

#41877D

accent

#DAC54E

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0404

muted

#7D7979

Preview Lab

Preview with #511B23

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

Preview Lab → · Contrast checker → · Palette generator →