#B73A33#B73A33

#B73A33 is a mid, vivid red. Relative luminance 0.133; OKLCH L 53.0% C 0.162 H 27.3°. Best body text is #FFFFFF at 5.73:1 contrast (WCAG AA passes).

Color values

HEX	#B73A33
RGB	rgb(183, 58, 51)
HSL	hsl(3, 56%, 46%)
HSV	hsv(3, 72%, 72%)
CMYK	cmyk(0%, 68.3%, 72.1%, 28.2%)
CIE-LAB	lab(43.26, 49.87, 32.70)
CIE-LCH	lch(43.26, 59.63, 33.25°)
OKLab	oklab(53.01% 0.1443 0.0745)
OKLCH	oklch(53.01% 0.162 27.3)
XYZ	xyz(21.6414, 13.3356, 4.5658)
Luminance	0.1333 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73A33 #33B0B7

analogous

#B7336E #B73A33 #B77C33

triadic

#B73A33 #33B73A #3A33B7

tetradic

#B73A33 #6EB733 #33B0B7 #7C33B7

square

#B73A33 #6EB733 #33B0B7 #7C33B7

split-complementary

#B73A33 #33B77C #336EB7

monochromatic

#571C18 #872B26 #B73A33 #D05D57 #DE8B87

Accessibility & contrast

On white

5.73

#B73A33 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#B73A33 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73A33

5.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73A33	#FFFFFF	#000000	##FFFFFF
##B73A33	1.00	5.73	3.67	5.73
#FFFFFF	5.73	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5531

Deuteranopia (green-blind)

#7C702F

Tritanopia (blue-blind)

#C91439

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b73a33;
/* rgb */ color: rgb(183, 58, 51);
/* oklch */ color: oklch(53.0% 0.162 27.3);

Tailwind

colors: {
  custom: {
    50: '#d4786b',
    500: '#b73a33',
    950: '#000000',
  },
}

SCSS

$custom: #b73a33;
$custom-light: #d4786b;
$custom-dark: #000000;

JSON

{
  "hex": "#b73a33",
  "rgb": {
    "r": 183,
    "g": 58,
    "b": 51
  },
  "hsl": {
    "h": 3.182,
    "s": 56.41,
    "l": 45.882
  },
  "oklch": {
    "l": 0.53005,
    "c": 0.16238,
    "h": 27.3
  },
  "luminance": 0.13332
}

Semantic roles & 50–950 ramp

primary

#B73A33

secondary

#7FC3C7

accent

#D8E048

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B73A33

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

Preview Lab → · Contrast checker → · Palette generator →