#51181F#51181F

#51181F is a dark, moderate red. Relative luminance 0.025; OKLCH L 30.3% C 0.085 H 16.6°. Best body text is #FFFFFF at 14.00:1 contrast (WCAG AA passes).

Color values

HEX	#51181F
RGB	rgb(81, 24, 31)
HSL	hsl(353, 54%, 21%)
HSV	hsv(353, 70%, 32%)
CMYK	cmyk(0%, 70.4%, 61.7%, 68.2%)
CIE-LAB	lab(17.93, 27.21, 9.82)
CIE-LCH	lch(17.93, 28.92, 19.84°)
OKLab	oklab(30.31% 0.0816 0.0243)
OKLCH	oklch(30.31% 0.085 16.6)
XYZ	xyz(3.9677, 2.5020, 1.5701)
Luminance	0.0250 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51181F #18514A

analogous

#51183B #51181F #512D18

triadic

#51181F #1F5118 #181F51

tetradic

#51181F #3B5118 #18514A #2D1851

square

#51181F #3B5118 #18514A #2D1851

split-complementary

#51181F #18512D #183B51

monochromatic

#180709 #220A0D #51181F #802631 #AF3443

Accessibility & contrast

On white

14.00

#51181F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#51181F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #51181F

14.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51181F	#FFFFFF	#000000	##FFFFFF
##51181F	1.00	14.00	1.50	14.00
#FFFFFF	14.00	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	14.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#26241F

Deuteranopia (green-blind)

#34301E

Tritanopia (blue-blind)

#590D1B

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #51181f;
/* rgb */ color: rgb(81, 24, 31);
/* oklch */ color: oklch(30.3% 0.085 16.6);

Tailwind

colors: {
  custom: {
    50: '#86585a',
    500: '#51181f',
    950: '#000000',
  },
}

SCSS

$custom: #51181f;
$custom-light: #86585a;
$custom-dark: #000000;

JSON

{
  "hex": "#51181f",
  "rgb": {
    "r": 81,
    "g": 24,
    "b": 31
  },
  "hsl": {
    "h": 352.632,
    "s": 54.286,
    "l": 20.588
  },
  "oklch": {
    "l": 0.30305,
    "c": 0.08512,
    "h": 16.6
  },
  "luminance": 0.02502
}

Semantic roles & 50–950 ramp

primary

#51181F

secondary

#3D887F

accent

#DECC4A

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0303

muted

#7D7878

Preview Lab

Preview with #51181F

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

Preview Lab → · Contrast checker → · Palette generator →