#4B131B#4B131B

#4B131B is a dark, moderate red. Relative luminance 0.020; OKLCH L 28.4% C 0.084 H 16.1°. Best body text is #FFFFFF at 14.91:1 contrast (WCAG AA passes).

Color values

HEX	#4B131B
RGB	rgb(75, 19, 27)
HSL	hsl(351, 60%, 18%)
HSV	hsv(351, 75%, 29%)
CMYK	cmyk(0%, 74.7%, 64%, 70.6%)
CIE-LAB	lab(15.70, 27.01, 9.48)
CIE-LCH	lch(15.70, 28.62, 19.34°)
OKLab	oklab(28.38% 0.081 0.0234)
OKLCH	oklch(28.38% 0.084 16.1)
XYZ	xyz(3.3327, 2.0412, 1.2552)
Luminance	0.0204 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B131B #134B43

analogous

#4B1337 #4B131B #4B2713

triadic

#4B131B #1B4B13 #131B4B

tetradic

#4B131B #374B13 #134B43 #27134B

square

#4B131B #374B13 #134B43 #27134B

split-complementary

#4B131B #134B27 #13374B

monochromatic

#180609 #1A0709 #4B131B #7C1F2D #AD2C3E

Accessibility & contrast

On white

14.91

#4B131B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#4B131B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4B131B

14.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B131B	#FFFFFF	#000000	##FFFFFF
##4B131B	1.00	14.91	1.41	14.91
#FFFFFF	14.91	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#21201B

Deuteranopia (green-blind)

#2F2B1A

Tritanopia (blue-blind)

#530716

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #4b131b;
/* rgb */ color: rgb(75, 19, 27);
/* oklch */ color: oklch(28.4% 0.084 16.1);

Tailwind

colors: {
  custom: {
    50: '#825557',
    500: '#4b131b',
    950: '#000000',
  },
}

SCSS

$custom: #4b131b;
$custom-light: #825557;
$custom-dark: #000000;

JSON

{
  "hex": "#4b131b",
  "rgb": {
    "r": 75,
    "g": 19,
    "b": 27
  },
  "hsl": {
    "h": 351.429,
    "s": 59.574,
    "l": 18.431
  },
  "oklch": {
    "l": 0.28381,
    "c": 0.08428,
    "h": 16.1
  },
  "luminance": 0.02041
}

Semantic roles & 50–950 ramp

primary

#4B131B

secondary

#368479

accent

#E3CC45

background

#F8F5F5

surface

#EFE9E9

border

#CAC5C5

text

#0B0303

muted

#7C7878

Preview Lab

Preview with #4B131B

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

Preview Lab → · Contrast checker → · Palette generator →