#4B151D#4B151D

#4B151D is a dark, moderate red. Relative luminance 0.021; OKLCH L 28.7% C 0.082 H 15.2°. Best body text is #FFFFFF at 14.75:1 contrast (WCAG AA passes).

Color values

HEX	#4B151D
RGB	rgb(75, 21, 29)
HSL	hsl(351, 56%, 19%)
HSV	hsv(351, 72%, 29%)
CMYK	cmyk(0%, 72%, 61.3%, 70.6%)
CIE-LAB	lab(16.11, 26.20, 8.59)
CIE-LCH	lch(16.11, 27.58, 18.15°)
OKLab	oklab(28.7% 0.0788 0.0214)
OKLCH	oklch(28.7% 0.082 15.2)
XYZ	xyz(3.3919, 2.1213, 1.3930)
Luminance	0.0212 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B151D #154B43

analogous

#4B1538 #4B151D #4B2815

triadic

#4B151D #1D4B15 #151D4B

tetradic

#4B151D #384B15 #154B43 #28154B

square

#4B151D #384B15 #154B43 #28154B

split-complementary

#4B151D #154B28 #15384B

monochromatic

#180709 #1B080B #4B151D #7B222F #AB3042

Accessibility & contrast

On white

14.75

#4B151D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#4B151D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4B151D

14.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B151D	#FFFFFF	#000000	##FFFFFF
##4B151D	1.00	14.75	1.42	14.75
#FFFFFF	14.75	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#22211D

Deuteranopia (green-blind)

#302C1C

Tritanopia (blue-blind)

#530B18

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #4b151d;
/* rgb */ color: rgb(75, 21, 29);
/* oklch */ color: oklch(28.7% 0.082 15.2);

Tailwind

colors: {
  custom: {
    50: '#815658',
    500: '#4b151d',
    950: '#000000',
  },
}

SCSS

$custom: #4b151d;
$custom-light: #815658;
$custom-dark: #000000;

JSON

{
  "hex": "#4b151d",
  "rgb": {
    "r": 75,
    "g": 21,
    "b": 29
  },
  "hsl": {
    "h": 351.111,
    "s": 56.25,
    "l": 18.824
  },
  "oklch": {
    "l": 0.28703,
    "c": 0.08164,
    "h": 15.2
  },
  "luminance": 0.02121
}

Semantic roles & 50–950 ramp

primary

#4B151D

secondary

#398378

accent

#E0C948

background

#F8F5F5

surface

#EFE9E9

border

#CAC5C5

text

#0B0303

muted

#7C7878

Preview Lab

Preview with #4B151D

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

Preview Lab → · Contrast checker → · Palette generator →