#B73B37#B73B37

#B73B37 is a mid, vivid red. Relative luminance 0.135; OKLCH L 53.2% C 0.161 H 26.0°. Best body text is #FFFFFF at 5.68:1 contrast (WCAG AA passes).

Color values

HEX	#B73B37
RGB	rgb(183, 59, 55)
HSL	hsl(2, 54%, 47%)
HSV	hsv(2, 70%, 72%)
CMYK	cmyk(0%, 67.8%, 69.9%, 28.2%)
CIE-LAB	lab(43.47, 49.66, 30.59)
CIE-LCH	lch(43.47, 58.32, 31.64°)
OKLab	oklab(53.18% 0.1445 0.0706)
OKLCH	oklch(53.18% 0.161 26)
XYZ	xyz(21.7843, 13.4742, 5.0674)
Luminance	0.1347 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73B37 #37B3B7

analogous

#B73773 #B73B37 #B77B37

triadic

#B73B37 #37B73B #3B37B7

tetradic

#B73B37 #73B737 #37B3B7 #7B37B7

square

#B73B37 #73B737 #37B3B7 #7B37B7

split-complementary

#B73B37 #37B77B #3773B7

monochromatic

#591D1B #882C29 #B73B37 #CE605D #DC8E8C

Accessibility & contrast

On white

5.68

#B73B37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#B73B37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73B37

5.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73B37	#FFFFFF	#000000	##FFFFFF
##B73B37	1.00	5.68	3.69	5.68
#FFFFFF	5.68	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5636

Deuteranopia (green-blind)

#7C7133

Tritanopia (blue-blind)

#C9183B

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b73b37;
/* rgb */ color: rgb(183, 59, 55);
/* oklch */ color: oklch(53.2% 0.161 26.0);

Tailwind

colors: {
  custom: {
    50: '#d4786e',
    500: '#b73b37',
    950: '#000000',
  },
}

SCSS

$custom: #b73b37;
$custom-light: #d4786e;
$custom-dark: #000000;

JSON

{
  "hex": "#b73b37",
  "rgb": {
    "r": 183,
    "g": 59,
    "b": 55
  },
  "hsl": {
    "h": 1.875,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.53176,
    "c": 0.16079,
    "h": 26
  },
  "luminance": 0.13471
}

Semantic roles & 50–950 ramp

primary

#B73B37

secondary

#83C5C7

accent

#D9DD4B

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #B73B37

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

Preview Lab → · Contrast checker → · Palette generator →