#4F101B#4F101B

#4F101B is a dark, moderate red. Relative luminance 0.021; OKLCH L 28.8% C 0.093 H 15.5°. Best body text is #FFFFFF at 14.76:1 contrast (WCAG AA passes).

Color values

HEX	#4F101B
RGB	rgb(79, 16, 27)
HSL	hsl(350, 66%, 19%)
HSV	hsv(350, 80%, 31%)
CMYK	cmyk(0%, 79.7%, 65.8%, 69%)
CIE-LAB	lab(16.07, 29.82, 10.12)
CIE-LCH	lch(16.07, 31.49, 18.74°)
OKLab	oklab(28.81% 0.0894 0.0248)
OKLCH	oklch(28.81% 0.093 15.5)
XYZ	xyz(3.6079, 2.1125, 1.2545)
Luminance	0.0211 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F101B #104F44

analogous

#4F103A #4F101B #4F2410

triadic

#4F101B #1B4F10 #101B4F

tetradic

#4F101B #3A4F10 #104F44 #24104F

square

#4F101B #3A4F10 #104F44 #24104F

split-complementary

#4F101B #104F24 #103A4F

monochromatic

#190509 #1C060A #4F101B #821A2C #B5253E

Accessibility & contrast

On white

14.76

#4F101B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#4F101B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4F101B

14.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F101B	#FFFFFF	#000000	##FFFFFF
##4F101B	1.00	14.76	1.42	14.76
#FFFFFF	14.76	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#21201B

Deuteranopia (green-blind)

#312D19

Tritanopia (blue-blind)

#570115

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #4f101b;
/* rgb */ color: rgb(79, 16, 27);
/* oklch */ color: oklch(28.8% 0.093 15.5);

Tailwind

colors: {
  custom: {
    50: '#855457',
    500: '#4f101b',
    950: '#000000',
  },
}

SCSS

$custom: #4f101b;
$custom-light: #855457;
$custom-dark: #000000;

JSON

{
  "hex": "#4f101b",
  "rgb": {
    "r": 79,
    "g": 16,
    "b": 27
  },
  "hsl": {
    "h": 349.524,
    "s": 66.316,
    "l": 18.627
  },
  "oklch": {
    "l": 0.2881,
    "c": 0.09277,
    "h": 15.5
  },
  "luminance": 0.02112
}

Semantic roles & 50–950 ramp

primary

#4F101B

secondary

#32897A

accent

#E9CB3F

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0303

muted

#7D7878

Preview Lab

Preview with #4F101B

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

Preview Lab → · Contrast checker → · Palette generator →