#51181D#51181D

#51181D is a dark, moderate red. Relative luminance 0.025; OKLCH L 30.3% C 0.085 H 18.7°. Best body text is #FFFFFF at 14.02:1 contrast (WCAG AA passes).

Color values

HEX	#51181D
RGB	rgb(81, 24, 29)
HSL	hsl(355, 54%, 21%)
HSV	hsv(355, 70%, 32%)
CMYK	cmyk(0%, 70.4%, 64.2%, 68.2%)
CIE-LAB	lab(17.88, 27.03, 11.17)
CIE-LCH	lch(17.88, 29.25, 22.45°)
OKLab	oklab(30.26% 0.0806 0.0274)
OKLCH	oklch(30.26% 0.085 18.7)
XYZ	xyz(3.9421, 2.4918, 1.4355)
Luminance	0.0249 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51181D #18514C

analogous

#511839 #51181D #512F18

triadic

#51181D #1D5118 #181D51

tetradic

#51181D #395118 #18514C #2F1851

square

#51181D #395118 #18514C #2F1851

split-complementary

#51181D #18512F #183951

monochromatic

#180708 #220A0C #51181D #80262E #AF343F

Accessibility & contrast

On white

14.02

#51181D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#51181D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #51181D

14.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51181D	#FFFFFF	#000000	##FFFFFF
##51181D	1.00	14.02	1.50	14.02
#FFFFFF	14.02	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	14.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#26241D

Deuteranopia (green-blind)

#35301C

Tritanopia (blue-blind)

#590D1A

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #51181d;
/* rgb */ color: rgb(81, 24, 29);
/* oklch */ color: oklch(30.3% 0.085 18.7);

Tailwind

colors: {
  custom: {
    50: '#865858',
    500: '#51181d',
    950: '#000000',
  },
}

SCSS

$custom: #51181d;
$custom-light: #865858;
$custom-dark: #000000;

JSON

{
  "hex": "#51181d",
  "rgb": {
    "r": 81,
    "g": 24,
    "b": 29
  },
  "hsl": {
    "h": 354.737,
    "s": 54.286,
    "l": 20.588
  },
  "oklch": {
    "l": 0.30256,
    "c": 0.08515,
    "h": 18.7
  },
  "luminance": 0.02491
}

Semantic roles & 50–950 ramp

primary

#51181D

secondary

#3D8881

accent

#DED14A

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0303

muted

#7D7878

Preview Lab

Preview with #51181D

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

Preview Lab → · Contrast checker → · Palette generator →