#51151B#51151B

#51151B is a dark, moderate red. Relative luminance 0.024; OKLCH L 29.8% C 0.089 H 18.8°. Best body text is #FFFFFF at 14.26:1 contrast (WCAG AA passes).

Color values

HEX	#51151B
RGB	rgb(81, 21, 27)
HSL	hsl(354, 59%, 20%)
HSV	hsv(354, 74%, 32%)
CMYK	cmyk(0%, 74.1%, 66.7%, 68.2%)
CIE-LAB	lab(17.30, 28.33, 11.82)
CIE-LCH	lch(17.30, 30.70, 22.64°)
OKLab	oklab(29.81% 0.0844 0.0287)
OKLCH	oklch(29.81% 0.089 18.8)
XYZ	xyz(3.8597, 2.3653, 1.2900)
Luminance	0.0237 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51151B #15514B

analogous

#511539 #51151B #512D15

triadic

#51151B #1B5115 #151B51

tetradic

#51151B #395115 #15514B #2D1551

square

#51151B #395115 #15514B #2D1551

split-complementary

#51151B #15512D #153951

monochromatic

#180608 #20080B #51151B #82222B #B22E3B

Accessibility & contrast

On white

14.26

#51151B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#51151B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #51151B

14.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51151B	#FFFFFF	#000000	##FFFFFF
##51151B	1.00	14.26	1.47	14.26
#FFFFFF	14.26	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#25231B

Deuteranopia (green-blind)

#342F19

Tritanopia (blue-blind)

#590718

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #51151b;
/* rgb */ color: rgb(81, 21, 27);
/* oklch */ color: oklch(29.8% 0.089 18.8);

Tailwind

colors: {
  custom: {
    50: '#875757',
    500: '#51151b',
    950: '#000000',
  },
}

SCSS

$custom: #51151b;
$custom-light: #875757;
$custom-dark: #000000;

JSON

{
  "hex": "#51151b",
  "rgb": {
    "r": 81,
    "g": 21,
    "b": 27
  },
  "hsl": {
    "h": 354,
    "s": 58.824,
    "l": 20
  },
  "oklch": {
    "l": 0.29805,
    "c": 0.08911,
    "h": 18.8
  },
  "luminance": 0.02365
}

Semantic roles & 50–950 ramp

primary

#51151B

secondary

#398981

accent

#E2D246

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0303

muted

#7D7878

Preview Lab

Preview with #51151B

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

Preview Lab → · Contrast checker → · Palette generator →