#4C101C#4C101C

#4C101C is a dark, moderate red. Relative luminance 0.020; OKLCH L 28.2% C 0.089 H 13.6°. Best body text is #FFFFFF at 15.02:1 contrast (WCAG AA passes).

Color values

HEX	#4C101C
RGB	rgb(76, 16, 28)
HSL	hsl(348, 65%, 18%)
HSV	hsv(348, 79%, 30%)
CMYK	cmyk(0%, 78.9%, 63.2%, 70.2%)
CIE-LAB	lab(15.44, 28.83, 8.44)
CIE-LCH	lch(15.44, 30.04, 16.32°)
OKLab	oklab(28.24% 0.0868 0.021)
OKLCH	oklch(28.24% 0.089 13.6)
XYZ	xyz(3.3757, 1.9914, 1.3050)
Luminance	0.0199 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4C101C #104C40

analogous

#4C103A #4C101C #4C2210

triadic

#4C101C #1C4C10 #101C4C

tetradic

#4C101C #3A4C10 #104C40 #22104C

square

#4C101C #3A4C10 #104C40 #22104C

split-complementary

#4C101C #104C22 #103A4C

monochromatic

#190509 #190509 #4C101C #7F1B2F #B12541

Accessibility & contrast

On white

15.02

#4C101C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#4C101C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4C101C

15.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4C101C	#FFFFFF	#000000	##FFFFFF
##4C101C	1.00	15.02	1.40	15.02
#FFFFFF	15.02	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	15.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#201F1C

Deuteranopia (green-blind)

#2F2B1A

Tritanopia (blue-blind)

#540315

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #4c101c;
/* rgb */ color: rgb(76, 16, 28);
/* oklch */ color: oklch(28.2% 0.089 13.6);

Tailwind

colors: {
  custom: {
    50: '#835357',
    500: '#4c101c',
    950: '#000000',
  },
}

SCSS

$custom: #4c101c;
$custom-light: #835357;
$custom-dark: #000000;

JSON

{
  "hex": "#4c101c",
  "rgb": {
    "r": 76,
    "g": 16,
    "b": 28
  },
  "hsl": {
    "h": 348,
    "s": 65.217,
    "l": 18.039
  },
  "oklch": {
    "l": 0.28235,
    "c": 0.08934,
    "h": 13.6
  },
  "luminance": 0.01991
}

Semantic roles & 50–950 ramp

primary

#4C101C

secondary

#328675

accent

#E8C640

background

#F8F4F5

surface

#EFE8E9

border

#CAC4C5

text

#0B0303

muted

#7C7878

Preview Lab

Preview with #4C101C

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

Preview Lab → · Contrast checker → · Palette generator →