#B73333#B73333

#B73333 is a mid, vivid red. Relative luminance 0.127; OKLCH L 52.3% C 0.169 H 25.2°. Best body text is #FFFFFF at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#B73333
RGB	rgb(183, 51, 51)
HSL	hsl(0, 56%, 46%)
HSV	hsv(0, 72%, 72%)
CMYK	cmyk(0%, 72.1%, 72.1%, 28.2%)
CIE-LAB	lab(42.27, 52.59, 31.55)
CIE-LCH	lch(42.27, 61.32, 30.96°)
OKLab	oklab(52.26% 0.1529 0.072)
OKLCH	oklch(52.26% 0.169 25.2)
XYZ	xyz(21.3122, 12.6772, 4.4561)
Luminance	0.1267 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73333 #33B7B7

analogous

#B73375 #B73333 #B77533

triadic

#B73333 #33B733 #3333B7

tetradic

#B73333 #75B733 #33B7B7 #7533B7

square

#B73333 #75B733 #33B7B7 #7533B7

split-complementary

#B73333 #33B775 #3375B7

monochromatic

#571818 #872626 #B73333 #D05757 #DE8787

Accessibility & contrast

On white

5.94

#B73333 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.53

#B73333 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73333

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73333	#FFFFFF	#000000	##FFFFFF
##B73333	1.00	5.94	3.53	5.94
#FFFFFF	5.94	1.00	21.00	1.00
#000000	3.53	21.00	1.00	21.00
##FFFFFF	5.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595232

Deuteranopia (green-blind)

#7A6E2F

Tritanopia (blue-blind)

#C90035

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b73333;
/* rgb */ color: rgb(183, 51, 51);
/* oklch */ color: oklch(52.3% 0.169 25.2);

Tailwind

colors: {
  custom: {
    50: '#d5746b',
    500: '#b73333',
    950: '#000000',
  },
}

SCSS

$custom: #b73333;
$custom-light: #d5746b;
$custom-dark: #000000;

JSON

{
  "hex": "#b73333",
  "rgb": {
    "r": 183,
    "g": 51,
    "b": 51
  },
  "hsl": {
    "h": 0,
    "s": 56.41,
    "l": 45.882
  },
  "oklch": {
    "l": 0.52264,
    "c": 0.16896,
    "h": 25.2
  },
  "luminance": 0.12674
}

Semantic roles & 50–950 ramp

primary

#B73333

secondary

#7FC7C7

accent

#E0E048

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B73333

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

Preview Lab → · Contrast checker → · Palette generator →