#B73B33#B73B33

#B73B33 is a mid, vivid red. Relative luminance 0.134; OKLCH L 53.1% C 0.161 H 27.6°. Best body text is #FFFFFF at 5.70:1 contrast (WCAG AA passes).

Color values

HEX	#B73B33
RGB	rgb(183, 59, 51)
HSL	hsl(4, 56%, 46%)
HSV	hsv(4, 72%, 72%)
CMYK	cmyk(0%, 67.8%, 72.1%, 28.2%)
CIE-LAB	lab(43.41, 49.46, 32.87)
CIE-LCH	lch(43.41, 59.38, 33.61°)
OKLab	oklab(53.12% 0.143 0.0749)
OKLCH	oklch(53.12% 0.161 27.6)
XYZ	xyz(21.6923, 13.4374, 4.5828)
Luminance	0.1343 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73B33 #33AFB7

analogous

#B7336D #B73B33 #B77D33

triadic

#B73B33 #33B73B #3B33B7

tetradic

#B73B33 #6DB733 #33AFB7 #7D33B7

square

#B73B33 #6DB733 #33AFB7 #7D33B7

split-complementary

#B73B33 #33B77D #336DB7

monochromatic

#571C18 #872C26 #B73B33 #D05E57 #DE8C87

Accessibility & contrast

On white

5.70

#B73B33 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#B73B33 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73B33

5.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73B33	#FFFFFF	#000000	##FFFFFF
##B73B33	1.00	5.70	3.69	5.70
#FFFFFF	5.70	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E5531

Deuteranopia (green-blind)

#7D712F

Tritanopia (blue-blind)

#C9173A

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b73b33;
/* rgb */ color: rgb(183, 59, 51);
/* oklch */ color: oklch(53.1% 0.161 27.6);

Tailwind

colors: {
  custom: {
    50: '#d4786b',
    500: '#b73b33',
    950: '#000000',
  },
}

SCSS

$custom: #b73b33;
$custom-light: #d4786b;
$custom-dark: #000000;

JSON

{
  "hex": "#b73b33",
  "rgb": {
    "r": 183,
    "g": 59,
    "b": 51
  },
  "hsl": {
    "h": 3.636,
    "s": 56.41,
    "l": 45.882
  },
  "oklch": {
    "l": 0.53118,
    "c": 0.16141,
    "h": 27.6
  },
  "luminance": 0.13434
}

Semantic roles & 50–950 ramp

primary

#B73B33

secondary

#7FC3C7

accent

#D7E048

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B73B33

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

Preview Lab → · Contrast checker → · Palette generator →