#4D151B#4D151B

#4D151B is a dark, moderate red. Relative luminance 0.022; OKLCH L 29.0% C 0.084 H 17.9°. Best body text is #FFFFFF at 14.60:1 contrast (WCAG AA passes).

Color values

HEX	#4D151B
RGB	rgb(77, 21, 27)
HSL	hsl(354, 57%, 19%)
HSV	hsv(354, 73%, 30%)
CMYK	cmyk(0%, 72.7%, 64.9%, 69.8%)
CIE-LAB	lab(16.47, 26.80, 10.58)
CIE-LCH	lch(16.47, 28.82, 21.54°)
OKLab	oklab(29.03% 0.0801 0.0259)
OKLCH	oklch(29.03% 0.084 17.9)
XYZ	xyz(3.5269, 2.1937, 1.2744)
Luminance	0.0219 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4D151B #154D47

analogous

#4D1537 #4D151B #4D2B15

triadic

#4D151B #1B4D15 #151B4D

tetradic

#4D151B #374D15 #154D47 #2B154D

square

#4D151B #374D15 #154D47 #2B154D

split-complementary

#4D151B #154D2B #15374D

monochromatic

#180708 #1D080A #4D151B #7D222C #AD2F3D

Accessibility & contrast

On white

14.60

#4D151B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#4D151B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4D151B

14.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4D151B	#FFFFFF	#000000	##FFFFFF
##4D151B	1.00	14.60	1.44	14.60
#FFFFFF	14.60	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#23211B

Deuteranopia (green-blind)

#312D1A

Tritanopia (blue-blind)

#550918

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #4d151b;
/* rgb */ color: rgb(77, 21, 27);
/* oklch */ color: oklch(29.0% 0.084 17.9);

Tailwind

colors: {
  custom: {
    50: '#835657',
    500: '#4d151b',
    950: '#000000',
  },
}

SCSS

$custom: #4d151b;
$custom-light: #835657;
$custom-dark: #000000;

JSON

{
  "hex": "#4d151b",
  "rgb": {
    "r": 77,
    "g": 21,
    "b": 27
  },
  "hsl": {
    "h": 353.571,
    "s": 57.143,
    "l": 19.216
  },
  "oklch": {
    "l": 0.29034,
    "c": 0.08414,
    "h": 17.9
  },
  "luminance": 0.02193
}

Semantic roles & 50–950 ramp

primary

#4D151B

secondary

#39857D

accent

#E0D047

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0B0303

muted

#7C7878

Preview Lab

Preview with #4D151B

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

Preview Lab → · Contrast checker → · Palette generator →