#B33B3A#B33B3A

#B33B3A is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.5% C 0.156 H 24.7°. Best body text is #FFFFFF at 5.83:1 contrast (WCAG AA passes).

Color values

HEX	#B33B3A
RGB	rgb(179, 59, 58)
HSL	hsl(0, 51%, 46%)
HSV	hsv(0, 68%, 70%)
CMYK	cmyk(0%, 67%, 67.6%, 29.8%)
CIE-LAB	lab(42.79, 48.47, 27.83)
CIE-LCH	lch(42.79, 55.89, 29.86°)
OKLab	oklab(52.55% 0.1418 0.0651)
OKLCH	oklch(52.55% 0.156 24.7)
XYZ	xyz(20.9203, 13.0201, 5.4137)
Luminance	0.1302 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33B3A #3AB2B3

analogous

#B33A76 #B33B3A #B3783A

triadic

#B33B3A #3AB33B #3B3AB3

tetradic

#B33B3A #76B33A #3AB2B3 #783AB3

square

#B33B3A #76B33A #3AB2B3 #783AB3

split-complementary

#B33B3A #3AB378 #3A76B3

monochromatic

#571D1C #852C2B #B33B3A #CB605F #DA8E8D

Accessibility & contrast

On white

5.83

#B33B3A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#B33B3A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33B3A

5.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33B3A	#FFFFFF	#000000	##FFFFFF
##B33B3A	1.00	5.83	3.60	5.83
#FFFFFF	5.83	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5539

Deuteranopia (green-blind)

#7A6F37

Tritanopia (blue-blind)

#C41C3C

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b33b3a;
/* rgb */ color: rgb(179, 59, 58);
/* oklch */ color: oklch(52.5% 0.156 24.7);

Tailwind

colors: {
  custom: {
    50: '#d17870',
    500: '#b33b3a',
    950: '#000000',
  },
}

SCSS

$custom: #b33b3a;
$custom-light: #d17870;
$custom-dark: #000000;

JSON

{
  "hex": "#b33b3a",
  "rgb": {
    "r": 179,
    "g": 59,
    "b": 58
  },
  "hsl": {
    "h": 0.496,
    "s": 51.055,
    "l": 46.471
  },
  "oklch": {
    "l": 0.5255,
    "c": 0.15606,
    "h": 24.7
  },
  "luminance": 0.13017
}

Semantic roles & 50–950 ramp

primary

#B33B3A

secondary

#84C4C5

accent

#D9DB4D

background

#FDF7F6

surface

#FBEEEC

border

#D4C9C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #B33B3A

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

Preview Lab → · Contrast checker → · Palette generator →