#4B181D#4B181D

#4B181D is a dark, moderate red. Relative luminance 0.022; OKLCH L 29.1% C 0.077 H 17.5°. Best body text is #FFFFFF at 14.51:1 contrast (WCAG AA passes).

Color values

HEX	#4B181D
RGB	rgb(75, 24, 29)
HSL	hsl(354, 52%, 19%)
HSV	hsv(354, 68%, 29%)
CMYK	cmyk(0%, 68%, 61.3%, 70.6%)
CIE-LAB	lab(16.69, 24.65, 9.37)
CIE-LCH	lch(16.69, 26.37, 20.82°)
OKLab	oklab(29.14% 0.0738 0.0233)
OKLCH	oklch(29.14% 0.077 17.5)
XYZ	xyz(3.4504, 2.2383, 1.4125)
Luminance	0.0224 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B181D #184B46

analogous

#4B1837 #4B181D #4B2D18

triadic

#4B181D #1D4B18 #181D4B

tetradic

#4B181D #374B18 #184B46 #2D184B

square

#4B181D #374B18 #184B46 #2D184B

split-complementary

#4B181D #184B2D #18374B

monochromatic

#170709 #1D090B #4B181D #79272F #A83641

Accessibility & contrast

On white

14.51

#4B181D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#4B181D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4B181D

14.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B181D	#FFFFFF	#000000	##FFFFFF
##4B181D	1.00	14.51	1.45	14.51
#FFFFFF	14.51	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#24231D

Deuteranopia (green-blind)

#312D1C

Tritanopia (blue-blind)

#530F1A

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #4b181d;
/* rgb */ color: rgb(75, 24, 29);
/* oklch */ color: oklch(29.1% 0.077 17.5);

Tailwind

colors: {
  custom: {
    50: '#815858',
    500: '#4b181d',
    950: '#000000',
  },
}

SCSS

$custom: #4b181d;
$custom-light: #815858;
$custom-dark: #000000;

JSON

{
  "hex": "#4b181d",
  "rgb": {
    "r": 75,
    "g": 24,
    "b": 29
  },
  "hsl": {
    "h": 354.118,
    "s": 51.515,
    "l": 19.412
  },
  "oklch": {
    "l": 0.29137,
    "c": 0.07742,
    "h": 17.5
  },
  "luminance": 0.02238
}

Semantic roles & 50–950 ramp

primary

#4B181D

secondary

#3D827B

accent

#DBCD4D

background

#F8F5F5

surface

#EFE9E9

border

#CAC5C5

text

#0B0303

muted

#7C7878

Preview Lab

Preview with #4B181D

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

Preview Lab → · Contrast checker → · Palette generator →