#B73D37#B73D37

#B73D37 is a mid, vivid red. Relative luminance 0.137; OKLCH L 53.4% C 0.159 H 26.7°. Best body text is #FFFFFF at 5.62:1 contrast (WCAG AA passes).

Color values

HEX	#B73D37
RGB	rgb(183, 61, 55)
HSL	hsl(3, 54%, 47%)
HSV	hsv(3, 70%, 72%)
CMYK	cmyk(0%, 66.7%, 69.9%, 28.2%)
CIE-LAB	lab(43.78, 48.82, 30.96)
CIE-LCH	lch(43.78, 57.81, 32.38°)
OKLab	oklab(53.41% 0.1418 0.0714)
OKLCH	oklch(53.41% 0.159 26.7)
XYZ	xyz(21.8891, 13.6837, 5.1023)
Luminance	0.1368 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73D37 #37B1B7

analogous

#B73771 #B73D37 #B77D37

triadic

#B73D37 #37B73D #3D37B7

tetradic

#B73D37 #71B737 #37B1B7 #7D37B7

square

#B73D37 #71B737 #37B1B7 #7D37B7

split-complementary

#B73D37 #37B77D #3771B7

monochromatic

#591E1B #882D29 #B73D37 #CE625D #DC908C

Accessibility & contrast

On white

5.62

#B73D37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.74

#B73D37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73D37

5.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73D37	#FFFFFF	#000000	##FFFFFF
##B73D37	1.00	5.62	3.74	5.62
#FFFFFF	5.62	1.00	21.00	1.00
#000000	3.74	21.00	1.00	21.00
##FFFFFF	5.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F5735

Deuteranopia (green-blind)

#7D7133

Tritanopia (blue-blind)

#C91C3D

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b73d37;
/* rgb */ color: rgb(183, 61, 55);
/* oklch */ color: oklch(53.4% 0.159 26.7);

Tailwind

colors: {
  custom: {
    50: '#d4796e',
    500: '#b73d37',
    950: '#000000',
  },
}

SCSS

$custom: #b73d37;
$custom-light: #d4796e;
$custom-dark: #000000;

JSON

{
  "hex": "#b73d37",
  "rgb": {
    "r": 183,
    "g": 61,
    "b": 55
  },
  "hsl": {
    "h": 2.813,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.53405,
    "c": 0.1588,
    "h": 26.7
  },
  "luminance": 0.13681
}

Semantic roles & 50–950 ramp

primary

#B73D37

secondary

#83C4C7

accent

#D6DD4B

background

#FEF7F6

surface

#FCEEEC

border

#D5C9C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #B73D37

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

Preview Lab → · Contrast checker → · Palette generator →