#B73937#B73937

#B73937 is a mid, vivid red. Relative luminance 0.133; OKLCH L 53.0% C 0.163 H 25.4°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#B73937
RGB	rgb(183, 57, 55)
HSL	hsl(1, 54%, 47%)
HSV	hsv(1, 70%, 72%)
CMYK	cmyk(0%, 68.9%, 69.9%, 28.2%)
CIE-LAB	lab(43.17, 50.47, 30.24)
CIE-LCH	lch(43.17, 58.83, 30.93°)
OKLab	oklab(52.95% 0.147 0.0698)
OKLCH	oklch(52.95% 0.163 25.4)
XYZ	xyz(21.6835, 13.2725, 5.0338)
Luminance	0.1327 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73937 #37B5B7

analogous

#B73775 #B73937 #B77937

triadic

#B73937 #37B739 #3937B7

tetradic

#B73937 #75B737 #37B5B7 #7937B7

square

#B73937 #75B737 #37B5B7 #7937B7

split-complementary

#B73937 #37B779 #3775B7

monochromatic

#591C1B #882A29 #B73937 #CE5F5D #DC8D8C

Accessibility & contrast

On white

5.75

#B73937 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#B73937 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73937

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73937	#FFFFFF	#000000	##FFFFFF
##B73937	1.00	5.75	3.65	5.75
#FFFFFF	5.75	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5536

Deuteranopia (green-blind)

#7C7033

Tritanopia (blue-blind)

#C9133A

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b73937;
/* rgb */ color: rgb(183, 57, 55);
/* oklch */ color: oklch(53.0% 0.163 25.4);

Tailwind

colors: {
  custom: {
    50: '#d4776e',
    500: '#b73937',
    950: '#000000',
  },
}

SCSS

$custom: #b73937;
$custom-light: #d4776e;
$custom-dark: #000000;

JSON

{
  "hex": "#b73937",
  "rgb": {
    "r": 183,
    "g": 57,
    "b": 55
  },
  "hsl": {
    "h": 0.938,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.52952,
    "c": 0.16276,
    "h": 25.4
  },
  "luminance": 0.13269
}

Semantic roles & 50–950 ramp

primary

#B73937

secondary

#83C6C7

accent

#DBDD4B

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #B73937

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

Preview Lab → · Contrast checker → · Palette generator →