#51171B#51171B

#51171B is a dark, moderate red. Relative luminance 0.024; OKLCH L 30.1% C 0.087 H 20.1°. Best body text is #FFFFFF at 14.11:1 contrast (WCAG AA passes).

Color values

HEX	#51171B
RGB	rgb(81, 23, 27)
HSL	hsl(356, 56%, 20%)
HSV	hsv(356, 72%, 32%)
CMYK	cmyk(0%, 71.6%, 66.7%, 68.2%)
CIE-LAB	lab(17.65, 27.37, 12.28)
CIE-LCH	lch(17.65, 30.00, 24.16°)
OKLab	oklab(30.07% 0.0813 0.0298)
OKLCH	oklch(30.07% 0.087 20.1)
XYZ	xyz(3.8979, 2.4418, 1.3028)
Luminance	0.0244 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51171B #17514D

analogous

#511738 #51171B #513017

triadic

#51171B #1B5117 #171B51

tetradic

#51171B #385117 #17514D #301751

square

#51171B #385117 #17514D #301751

split-complementary

#51171B #175130 #173851

monochromatic

#180708 #21090B #51171B #81252B #B0323B

Accessibility & contrast

On white

14.11

#51171B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#51171B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #51171B

14.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51171B	#FFFFFF	#000000	##FFFFFF
##51171B	1.00	14.11	1.49	14.11
#FFFFFF	14.11	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#26241B

Deuteranopia (green-blind)

#353019

Tritanopia (blue-blind)

#590A19

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #51171b;
/* rgb */ color: rgb(81, 23, 27);
/* oklch */ color: oklch(30.1% 0.087 20.1);

Tailwind

colors: {
  custom: {
    50: '#865857',
    500: '#51171b',
    950: '#000000',
  },
}

SCSS

$custom: #51171b;
$custom-light: #865857;
$custom-dark: #000000;

JSON

{
  "hex": "#51171b",
  "rgb": {
    "r": 81,
    "g": 23,
    "b": 27
  },
  "hsl": {
    "h": 355.862,
    "s": 55.769,
    "l": 20.392
  },
  "oklch": {
    "l": 0.3007,
    "c": 0.08657,
    "h": 20.1
  },
  "luminance": 0.02441
}

Semantic roles & 50–950 ramp

primary

#51171B

secondary

#3C8883

accent

#DFD549

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0303

muted

#7D7878

Preview Lab

Preview with #51171B

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

Preview Lab → · Contrast checker → · Palette generator →