#4C180B#4C180B

#4C180B is a dark, moderate red. Relative luminance 0.022; OKLCH L 29.0% C 0.082 H 35.1°. Best body text is #FFFFFF at 14.56:1 contrast (WCAG AA passes).

Color values

HEX	#4C180B
RGB	rgb(76, 24, 11)
HSL	hsl(12, 75%, 17%)
HSV	hsv(12, 86%, 30%)
CMYK	cmyk(0%, 68.4%, 85.5%, 70.2%)
CIE-LAB	lab(16.57, 23.82, 20.47)
CIE-LCH	lch(16.57, 31.41, 40.68°)
OKLab	oklab(28.99% 0.0672 0.0473)
OKLCH	oklch(28.99% 0.082 35.1)
XYZ	xyz(3.3679, 2.2144, 0.5666)
Luminance	0.0221 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4C180B #0B3F4C

analogous

#4C0B1F #4C180B #4C390B

triadic

#4C180B #0B4C18 #180B4C

tetradic

#4C180B #1F4C0B #0B3F4C #390B4C

square

#4C180B #1F4C0B #0B3F4C #390B4C

split-complementary

#4C180B #0B4C39 #0B1F4C

monochromatic

#1B0804 #1B0804 #4C180B #812913 #B73A1A

Accessibility & contrast

On white

14.56

#4C180B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#4C180B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4C180B

14.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4C180B	#FFFFFF	#000000	##FFFFFF
##4C180B	1.00	14.56	1.44	14.56
#FFFFFF	14.56	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#272209

Deuteranopia (green-blind)

#332D09

Tritanopia (blue-blind)

#540B15

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #4c180b;
/* rgb */ color: rgb(76, 24, 11);
/* oklch */ color: oklch(29.0% 0.082 35.1);

Tailwind

colors: {
  custom: {
    50: '#83574b',
    500: '#4c180b',
    950: '#000000',
  },
}

SCSS

$custom: #4c180b;
$custom-light: #83574b;
$custom-dark: #000000;

JSON

{
  "hex": "#4c180b",
  "rgb": {
    "r": 76,
    "g": 24,
    "b": 11
  },
  "hsl": {
    "h": 12,
    "s": 74.713,
    "l": 17.059
  },
  "oklch": {
    "l": 0.28985,
    "c": 0.08214,
    "h": 35.1
  },
  "luminance": 0.02214
}

Semantic roles & 50–950 ramp

primary

#4C180B

secondary

#2B7588

accent

#CCF136

background

#F8F5F4

surface

#F0E9E7

border

#CBC5C3

text

#0C0301

muted

#7D7877

Preview Lab

Preview with #4C180B

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

Preview Lab → · Contrast checker → · Palette generator →