#4B180C#4B180C

#4B180C is a dark, moderate red. Relative luminance 0.022; OKLCH L 28.8% C 0.081 H 34.6°. Best body text is #FFFFFF at 14.63:1 contrast (WCAG AA passes).

Color values

HEX	#4B180C
RGB	rgb(75, 24, 12)
HSL	hsl(11, 72%, 17%)
HSV	hsv(11, 84%, 29%)
CMYK	cmyk(0%, 68%, 84%, 70.6%)
CIE-LAB	lab(16.39, 23.44, 19.75)
CIE-LCH	lch(16.39, 30.65, 40.12°)
OKLab	oklab(28.81% 0.0664 0.0457)
OKLCH	oklch(28.81% 0.081 34.6)
XYZ	xyz(3.2950, 2.1761, 0.5943)
Luminance	0.0218 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B180C #0C3F4B

analogous

#4B0C1F #4B180C #4B380C

triadic

#4B180C #0C4B18 #180C4B

tetradic

#4B180C #1F4B0C #0C3F4B #380C4B

square

#4B180C #1F4B0C #0C3F4B #380C4B

split-complementary

#4B180C #0C4B38 #0C1F4B

monochromatic

#1A0804 #1A0804 #4B180C #802914 #B53A1D

Accessibility & contrast

On white

14.63

#4B180C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#4B180C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4B180C

14.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B180C	#FFFFFF	#000000	##FFFFFF
##4B180C	1.00	14.63	1.44	14.63
#FFFFFF	14.63	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#26220A

Deuteranopia (green-blind)

#332D0A

Tritanopia (blue-blind)

#530C16

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #4b180c;
/* rgb */ color: rgb(75, 24, 12);
/* oklch */ color: oklch(28.8% 0.081 34.6);

Tailwind

colors: {
  custom: {
    50: '#82574c',
    500: '#4b180c',
    950: '#000000',
  },
}

SCSS

$custom: #4b180c;
$custom-light: #82574c;
$custom-dark: #000000;

JSON

{
  "hex": "#4b180c",
  "rgb": {
    "r": 75,
    "g": 24,
    "b": 12
  },
  "hsl": {
    "h": 11.429,
    "s": 72.414,
    "l": 17.059
  },
  "oklch": {
    "l": 0.28808,
    "c": 0.08059,
    "h": 34.6
  },
  "luminance": 0.02176
}

Semantic roles & 50–950 ramp

primary

#4B180C

secondary

#2C7587

accent

#CCEF39

background

#F8F5F4

surface

#F0E9E7

border

#CBC5C3

text

#0B0301

muted

#7C7877

Preview Lab

Preview with #4B180C

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

Preview Lab → · Contrast checker → · Palette generator →