#B73637#B73637

#B73637 is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.6% C 0.166 H 24.5°. Best body text is #FFFFFF at 5.84:1 contrast (WCAG AA passes).

Color values

HEX	#B73637
RGB	rgb(183, 54, 55)
HSL	hsl(360, 54%, 46%)
HSV	hsv(360, 70%, 72%)
CMYK	cmyk(0%, 70.5%, 69.9%, 28.2%)
CIE-LAB	lab(42.74, 51.65, 29.72)
CIE-LCH	lch(42.74, 59.59, 29.92°)
OKLab	oklab(52.63% 0.1508 0.0687)
OKLCH	oklch(52.63% 0.166 24.5)
XYZ	xyz(21.5395, 12.9846, 4.9858)
Luminance	0.1298 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73637 #36B7B6

analogous

#B73678 #B73637 #B77636

triadic

#B73637 #37B736 #3637B7

tetradic

#B73637 #78B736 #36B7B6 #7636B7

square

#B73637 #78B736 #36B7B6 #7636B7

split-complementary

#B73637 #36B776 #3678B7

monochromatic

#581A1B #882829 #B73637 #CF5B5C #DD8B8B

Accessibility & contrast

On white

5.84

#B73637 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#B73637 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73637

5.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73637	#FFFFFF	#000000	##FFFFFF
##B73637	1.00	5.84	3.60	5.84
#FFFFFF	5.84	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5336

Deuteranopia (green-blind)

#7B6F33

Tritanopia (blue-blind)

#C90938

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b73637;
/* rgb */ color: rgb(183, 54, 55);
/* oklch */ color: oklch(52.6% 0.166 24.5);

Tailwind

colors: {
  custom: {
    50: '#d4766e',
    500: '#b73637',
    950: '#000000',
  },
}

SCSS

$custom: #b73637;
$custom-light: #d4766e;
$custom-dark: #000000;

JSON

{
  "hex": "#b73637",
  "rgb": {
    "r": 183,
    "g": 54,
    "b": 55
  },
  "hsl": {
    "h": 359.535,
    "s": 54.43,
    "l": 46.471
  },
  "oklch": {
    "l": 0.5263,
    "c": 0.16567,
    "h": 24.5
  },
  "luminance": 0.12981
}

Semantic roles & 50–950 ramp

primary

#B73637

secondary

#82C7C6

accent

#DEDD4A

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #B73637

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

Preview Lab → · Contrast checker → · Palette generator →