#4C181B#4C181B

#4C181B is a dark, moderate red. Relative luminance 0.023; OKLCH L 29.3% C 0.079 H 20.0°. Best body text is #FFFFFF at 14.44:1 contrast (WCAG AA passes).

Color values

HEX	#4C181B
RGB	rgb(76, 24, 27)
HSL	hsl(357, 52%, 20%)
HSV	hsv(357, 68%, 30%)
CMYK	cmyk(0%, 68.4%, 64.5%, 70.2%)
CIE-LAB	lab(16.84, 24.87, 11.03)
CIE-LCH	lch(16.84, 27.21, 23.92°)
OKLab	oklab(29.27% 0.0741 0.027)
OKLCH	oklch(29.27% 0.079 20)
XYZ	xyz(3.5053, 2.2694, 1.2901)
Luminance	0.0227 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4C181B #184C49

analogous

#4C1835 #4C181B #4C2F18

triadic

#4C181B #1B4C18 #181B4C

tetradic

#4C181B #354C18 #184C49 #2F184C

square

#4C181B #354C18 #184C49 #2F184C

split-complementary

#4C181B #184C2F #18354C

monochromatic

#170708 #1D090A #4C181B #7B272C #A9353C

Accessibility & contrast

On white

14.44

#4C181B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#4C181B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4C181B

14.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4C181B	#FFFFFF	#000000	##FFFFFF
##4C181B	1.00	14.44	1.45	14.44
#FFFFFF	14.44	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#25231B

Deuteranopia (green-blind)

#322E1A

Tritanopia (blue-blind)

#540E19

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #4c181b;
/* rgb */ color: rgb(76, 24, 27);
/* oklch */ color: oklch(29.3% 0.079 20.0);

Tailwind

colors: {
  custom: {
    50: '#825857',
    500: '#4c181b',
    950: '#000000',
  },
}

SCSS

$custom: #4c181b;
$custom-light: #825857;
$custom-dark: #000000;

JSON

{
  "hex": "#4c181b",
  "rgb": {
    "r": 76,
    "g": 24,
    "b": 27
  },
  "hsl": {
    "h": 356.538,
    "s": 52,
    "l": 19.608
  },
  "oklch": {
    "l": 0.29272,
    "c": 0.07882,
    "h": 20
  },
  "luminance": 0.02269
}

Semantic roles & 50–950 ramp

primary

#4C181B

secondary

#3D837F

accent

#DBD34C

background

#F8F5F5

surface

#EFE9E9

border

#CAC5C5

text

#0B0303

muted

#7C7878

Preview Lab

Preview with #4C181B

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

Preview Lab → · Contrast checker → · Palette generator →