#4B101A#4B101A

#4B101A is a dark, moderate red. Relative luminance 0.019; OKLCH L 28.0% C 0.088 H 15.4°. Best body text is #FFFFFF at 15.13:1 contrast (WCAG AA passes).

Color values

HEX	#4B101A
RGB	rgb(75, 16, 26)
HSL	hsl(350, 65%, 18%)
HSV	hsv(350, 79%, 29%)
CMYK	cmyk(0%, 78.7%, 65.3%, 70.6%)
CIE-LAB	lab(15.18, 28.30, 9.50)
CIE-LCH	lch(15.18, 29.85, 18.56°)
OKLab	oklab(27.98% 0.0849 0.0234)
OKLCH	oklch(27.98% 0.088 15.4)
XYZ	xyz(3.2737, 1.9415, 1.1794)
Luminance	0.0194 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B101A #104B41

analogous

#4B1037 #4B101A #4B2410

triadic

#4B101A #1A4B10 #101A4B

tetradic

#4B101A #374B10 #104B41 #24104B

square

#4B101A #374B10 #104B41 #24104B

split-complementary

#4B101A #104B24 #10374B

monochromatic

#190509 #190509 #4B101A #7D1B2B #B0263D

Accessibility & contrast

On white

15.13

#4B101A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#4B101A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4B101A

15.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B101A	#FFFFFF	#000000	##FFFFFF
##4B101A	1.00	15.13	1.39	15.13
#FFFFFF	15.13	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F1E1A

Deuteranopia (green-blind)

#2F2B18

Tritanopia (blue-blind)

#530314

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #4b101a;
/* rgb */ color: rgb(75, 16, 26);
/* oklch */ color: oklch(28.0% 0.088 15.4);

Tailwind

colors: {
  custom: {
    50: '#825356',
    500: '#4b101a',
    950: '#000000',
  },
}

SCSS

$custom: #4b101a;
$custom-light: #825356;
$custom-dark: #000000;

JSON

{
  "hex": "#4b101a",
  "rgb": {
    "r": 75,
    "g": 16,
    "b": 26
  },
  "hsl": {
    "h": 349.831,
    "s": 64.835,
    "l": 17.843
  },
  "oklch": {
    "l": 0.27983,
    "c": 0.08805,
    "h": 15.4
  },
  "luminance": 0.01941
}

Semantic roles & 50–950 ramp

primary

#4B101A

secondary

#328577

accent

#E8CB40

background

#F8F4F5

surface

#EFE7E8

border

#CAC3C4

text

#0B0303

muted

#7C7878

Preview Lab

Preview with #4B101A

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

Preview Lab → · Contrast checker → · Palette generator →