#4D101B#4D101B

#4D101B is a dark, moderate red. Relative luminance 0.020; OKLCH L 28.4% C 0.090 H 14.9°. Best body text is #FFFFFF at 14.94:1 contrast (WCAG AA passes).

Color values

HEX	#4D101B
RGB	rgb(77, 16, 27)
HSL	hsl(349, 66%, 18%)
HSV	hsv(349, 79%, 30%)
CMYK	cmyk(0%, 79.2%, 64.9%, 69.8%)
CIE-LAB	lab(15.63, 29.10, 9.46)
CIE-LCH	lch(15.63, 30.60, 18.01°)
OKLab	oklab(28.41% 0.0874 0.0233)
OKLCH	oklch(28.41% 0.09 14.9)
XYZ	xyz(3.4440, 2.0280, 1.2468)
Luminance	0.0203 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4D101B #104D42

analogous

#4D1039 #4D101B #4D2310

triadic

#4D101B #1B4D10 #101B4D

tetradic

#4D101B #394D10 #104D42 #23104D

square

#4D101B #394D10 #104D42 #23104D

split-complementary

#4D101B #104D23 #10394D

monochromatic

#190509 #1A0509 #4D101B #801B2D #B2253F

Accessibility & contrast

On white

14.94

#4D101B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#4D101B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4D101B

14.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4D101B	#FFFFFF	#000000	##FFFFFF
##4D101B	1.00	14.94	1.41	14.94
#FFFFFF	14.94	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#201F1B

Deuteranopia (green-blind)

#302C19

Tritanopia (blue-blind)

#550215

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #4d101b;
/* rgb */ color: rgb(77, 16, 27);
/* oklch */ color: oklch(28.4% 0.090 14.9);

Tailwind

colors: {
  custom: {
    50: '#845457',
    500: '#4d101b',
    950: '#000000',
  },
}

SCSS

$custom: #4d101b;
$custom-light: #845457;
$custom-dark: #000000;

JSON

{
  "hex": "#4d101b",
  "rgb": {
    "r": 77,
    "g": 16,
    "b": 27
  },
  "hsl": {
    "h": 349.18,
    "s": 65.591,
    "l": 18.235
  },
  "oklch": {
    "l": 0.28409,
    "c": 0.09046,
    "h": 14.9
  },
  "luminance": 0.02027
}

Semantic roles & 50–950 ramp

primary

#4D101B

secondary

#328778

accent

#E9CA3F

background

#F8F5F5

surface

#F0E8E9

border

#CBC4C5

text

#0B0303

muted

#7C7878

Preview Lab

Preview with #4D101B

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

Preview Lab → · Contrast checker → · Palette generator →