#4B101C#4B101C

#4B101C is a dark, moderate red. Relative luminance 0.019; OKLCH L 28.0% C 0.088 H 13.3°. Best body text is #FFFFFF at 15.11:1 contrast (WCAG AA passes).

Color values

HEX	#4B101C
RGB	rgb(75, 16, 28)
HSL	hsl(348, 65%, 18%)
HSV	hsv(348, 79%, 29%)
CMYK	cmyk(0%, 78.7%, 62.7%, 70.6%)
CIE-LAB	lab(15.23, 28.47, 8.11)
CIE-LCH	lch(15.23, 29.60, 15.90°)
OKLab	oklab(28.04% 0.0858 0.0202)
OKLCH	oklch(28.04% 0.088 13.3)
XYZ	xyz(3.2969, 1.9507, 1.3013)
Luminance	0.0195 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B101C #104B3F

analogous

#4B1039 #4B101C #4B2210

triadic

#4B101C #1C4B10 #101C4B

tetradic

#4B101C #394B10 #104B3F #22104B

square

#4B101C #394B10 #104B3F #22104B

split-complementary

#4B101C #104B22 #10394B

monochromatic

#190509 #190509 #4B101C #7D1B2F #B02642

Accessibility & contrast

On white

15.11

#4B101C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#4B101C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4B101C

15.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B101C	#FFFFFF	#000000	##FFFFFF
##4B101C	1.00	15.11	1.39	15.11
#FFFFFF	15.11	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F1E1C

Deuteranopia (green-blind)

#2E2B1A

Tritanopia (blue-blind)

#530315

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #4b101c;
/* rgb */ color: rgb(75, 16, 28);
/* oklch */ color: oklch(28.0% 0.088 13.3);

Tailwind

colors: {
  custom: {
    50: '#825357',
    500: '#4b101c',
    950: '#000000',
  },
}

SCSS

$custom: #4b101c;
$custom-light: #825357;
$custom-dark: #000000;

JSON

{
  "hex": "#4b101c",
  "rgb": {
    "r": 75,
    "g": 16,
    "b": 28
  },
  "hsl": {
    "h": 347.797,
    "s": 64.835,
    "l": 17.843
  },
  "oklch": {
    "l": 0.28035,
    "c": 0.08817,
    "h": 13.3
  },
  "luminance": 0.0195
}

Semantic roles & 50–950 ramp

primary

#4B101C

secondary

#328574

accent

#E8C640

background

#F8F4F5

surface

#EFE8E9

border

#CAC4C5

text

#0B0303

muted

#7C7878

Preview Lab

Preview with #4B101C

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

Preview Lab → · Contrast checker → · Palette generator →