#4B180F#4B180F

#4B180F is a dark, moderate red. Relative luminance 0.022; OKLCH L 28.9% C 0.080 H 32.2°. Best body text is #FFFFFF at 14.62:1 contrast (WCAG AA passes).

Color values

HEX	#4B180F
RGB	rgb(75, 24, 15)
HSL	hsl(9, 67%, 18%)
HSV	hsv(9, 80%, 29%)
CMYK	cmyk(0%, 68%, 80%, 70.6%)
CIE-LAB	lab(16.43, 23.60, 18.32)
CIE-LCH	lch(16.43, 29.88, 37.83°)
OKLab	oklab(28.85% 0.0675 0.0425)
OKLCH	oklch(28.85% 0.08 32.2)
XYZ	xyz(3.3149, 2.1841, 0.6989)
Luminance	0.0218 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B180F #0F424B

analogous

#4B0F24 #4B180F #4B360F

triadic

#4B180F #0F4B18 #180F4B

tetradic

#4B180F #244B0F #0F424B #360F4B

square

#4B180F #244B0F #0F424B #360F4B

split-complementary

#4B180F #0F4B36 #0F244B

monochromatic

#1A0805 #1A0805 #4B180F #7E2819 #B13923

Accessibility & contrast

On white

14.62

#4B180F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#4B180F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4B180F

14.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B180F	#FFFFFF	#000000	##FFFFFF
##4B180F	1.00	14.62	1.44	14.62
#FFFFFF	14.62	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#26220E

Deuteranopia (green-blind)

#332D0D

Tritanopia (blue-blind)

#530C16

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #4b180f;
/* rgb */ color: rgb(75, 24, 15);
/* oklch */ color: oklch(28.9% 0.080 32.2);

Tailwind

colors: {
  custom: {
    50: '#82574e',
    500: '#4b180f',
    950: '#000000',
  },
}

SCSS

$custom: #4b180f;
$custom-light: #82574e;
$custom-dark: #000000;

JSON

{
  "hex": "#4b180f",
  "rgb": {
    "r": 75,
    "g": 24,
    "b": 15
  },
  "hsl": {
    "h": 9,
    "s": 66.667,
    "l": 17.647
  },
  "oklch": {
    "l": 0.28851,
    "c": 0.07976,
    "h": 32.2
  },
  "luminance": 0.02184
}

Semantic roles & 50–950 ramp

primary

#4B180F

secondary

#307985

accent

#D0EA3E

background

#F8F5F4

surface

#F0E9E7

border

#CBC5C3

text

#0B0301

muted

#7C7877

Preview Lab

Preview with #4B180F

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

Preview Lab → · Contrast checker → · Palette generator →