#4B180D#4B180D

#4B180D is a dark, moderate red. Relative luminance 0.022; OKLCH L 28.8% C 0.080 H 33.8°. Best body text is #FFFFFF at 14.63:1 contrast (WCAG AA passes).

Color values

HEX	#4B180D
RGB	rgb(75, 24, 13)
HSL	hsl(11, 70%, 17%)
HSV	hsv(11, 83%, 29%)
CMYK	cmyk(0%, 68%, 82.7%, 70.6%)
CIE-LAB	lab(16.40, 23.49, 19.30)
CIE-LCH	lch(16.40, 30.40, 39.40°)
OKLab	oklab(28.82% 0.0667 0.0447)
OKLCH	oklch(28.82% 0.08 33.8)
XYZ	xyz(3.3013, 2.1786, 0.6274)
Luminance	0.0218 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B180D #0D404B

analogous

#4B0D21 #4B180D #4B370D

triadic

#4B180D #0D4B18 #180D4B

tetradic

#4B180D #214B0D #0D404B #370D4B

square

#4B180D #214B0D #0D404B #370D4B

split-complementary

#4B180D #0D4B37 #0D214B

monochromatic

#1A0805 #1A0805 #4B180D #7F2916 #B3391F

Accessibility & contrast

On white

14.63

#4B180D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#4B180D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4B180D

14.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B180D	#FFFFFF	#000000	##FFFFFF
##4B180D	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)

#26220C

Deuteranopia (green-blind)

#332D0B

Tritanopia (blue-blind)

#530C16

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #4b180d;
/* rgb */ color: rgb(75, 24, 13);
/* oklch */ color: oklch(28.8% 0.080 33.8);

Tailwind

colors: {
  custom: {
    50: '#82574c',
    500: '#4b180d',
    950: '#000000',
  },
}

SCSS

$custom: #4b180d;
$custom-light: #82574c;
$custom-dark: #000000;

JSON

{
  "hex": "#4b180d",
  "rgb": {
    "r": 75,
    "g": 24,
    "b": 13
  },
  "hsl": {
    "h": 10.645,
    "s": 70.455,
    "l": 17.255
  },
  "oklch": {
    "l": 0.28822,
    "c": 0.08032,
    "h": 33.8
  },
  "luminance": 0.02178
}

Semantic roles & 50–950 ramp

primary

#4B180D

secondary

#2E7786

accent

#CEED3B

background

#F8F5F4

surface

#F0E9E7

border

#CBC5C3

text

#0B0301

muted

#7C7877

Preview Lab

Preview with #4B180D

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

Preview Lab → · Contrast checker → · Palette generator →