#4B151F#4B151F

#4B151F is a dark, moderate red. Relative luminance 0.021; OKLCH L 28.8% C 0.082 H 12.9°. Best body text is #FFFFFF at 14.72:1 contrast (WCAG AA passes).

Color values

HEX	#4B151F
RGB	rgb(75, 21, 31)
HSL	hsl(349, 56%, 19%)
HSV	hsv(349, 72%, 29%)
CMYK	cmyk(0%, 72%, 58.7%, 70.6%)
CIE-LAB	lab(16.16, 26.39, 7.22)
CIE-LCH	lch(16.16, 27.36, 15.30°)
OKLab	oklab(28.76% 0.0797 0.0182)
OKLCH	oklch(28.76% 0.082 12.9)
XYZ	xyz(3.4174, 2.1316, 1.5275)
Luminance	0.0213 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B151F #154B41

analogous

#4B153A #4B151F #4B2615

triadic

#4B151F #1F4B15 #151F4B

tetradic

#4B151F #3A4B15 #154B41 #26154B

square

#4B151F #3A4B15 #154B41 #26154B

split-complementary

#4B151F #154B26 #153A4B

monochromatic

#18070A #1B080B #4B151F #7B2233 #AB3047

Accessibility & contrast

On white

14.72

#4B151F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#4B151F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4B151F

14.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B151F	#FFFFFF	#000000	##FFFFFF
##4B151F	1.00	14.72	1.43	14.72
#FFFFFF	14.72	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#22211F

Deuteranopia (green-blind)

#302C1E

Tritanopia (blue-blind)

#520B19

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #4b151f;
/* rgb */ color: rgb(75, 21, 31);
/* oklch */ color: oklch(28.8% 0.082 12.9);

Tailwind

colors: {
  custom: {
    50: '#81565a',
    500: '#4b151f',
    950: '#000000',
  },
}

SCSS

$custom: #4b151f;
$custom-light: #81565a;
$custom-dark: #000000;

JSON

{
  "hex": "#4b151f",
  "rgb": {
    "r": 75,
    "g": 21,
    "b": 31
  },
  "hsl": {
    "h": 348.889,
    "s": 56.25,
    "l": 18.824
  },
  "oklch": {
    "l": 0.28758,
    "c": 0.08177,
    "h": 12.9
  },
  "luminance": 0.02131
}

Semantic roles & 50–950 ramp

primary

#4B151F

secondary

#398375

accent

#E0C448

background

#F8F5F5

surface

#EFE9E9

border

#CAC5C5

text

#0B0303

muted

#7C7878

Preview Lab

Preview with #4B151F

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

Preview Lab → · Contrast checker → · Palette generator →