#51131B#51131B

#51131B is a dark, moderate red. Relative luminance 0.023; OKLCH L 29.6% C 0.092 H 17.6°. Best body text is #FFFFFF at 14.40:1 contrast (WCAG AA passes).

Color values

HEX	#51131B
RGB	rgb(81, 19, 27)
HSL	hsl(352, 62%, 20%)
HSV	hsv(352, 77%, 32%)
CMYK	cmyk(0%, 76.5%, 66.7%, 68.2%)
CIE-LAB	lab(16.96, 29.25, 11.38)
CIE-LCH	lch(16.96, 31.39, 21.26°)
OKLab	oklab(29.56% 0.0873 0.0277)
OKLCH	oklch(29.56% 0.092 17.6)
XYZ	xyz(3.8244, 2.2947, 1.2782)
Luminance	0.0229 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51131B #135149

analogous

#51133A #51131B #512A13

triadic

#51131B #1B5113 #131B51

tetradic

#51131B #3A5113 #135149 #2A1351

square

#51131B #3A5113 #135149 #2A1351

split-complementary

#51131B #13512A #133A51

monochromatic

#190608 #1F070A #51131B #831F2C #B42A3C

Accessibility & contrast

On white

14.40

#51131B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#51131B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #51131B

14.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51131B	#FFFFFF	#000000	##FFFFFF
##51131B	1.00	14.40	1.46	14.40
#FFFFFF	14.40	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#23221B

Deuteranopia (green-blind)

#332F19

Tritanopia (blue-blind)

#590416

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #51131b;
/* rgb */ color: rgb(81, 19, 27);
/* oklch */ color: oklch(29.6% 0.092 17.6);

Tailwind

colors: {
  custom: {
    50: '#875657',
    500: '#51131b',
    950: '#000000',
  },
}

SCSS

$custom: #51131b;
$custom-light: #875657;
$custom-dark: #000000;

JSON

{
  "hex": "#51131b",
  "rgb": {
    "r": 81,
    "g": 19,
    "b": 27
  },
  "hsl": {
    "h": 352.258,
    "s": 62,
    "l": 19.608
  },
  "oklch": {
    "l": 0.29556,
    "c": 0.09157,
    "h": 17.6
  },
  "luminance": 0.02294
}

Semantic roles & 50–950 ramp

primary

#51131B

secondary

#368A7F

accent

#E5D043

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0303

muted

#7D7878

Preview Lab

Preview with #51131B

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

Preview Lab → · Contrast checker → · Palette generator →