#B73E37#B73E37

#B73E37 is a mid, vivid red. Relative luminance 0.138; OKLCH L 53.5% C 0.158 H 27.1°. Best body text is #FFFFFF at 5.59:1 contrast (WCAG AA passes).

Color values

HEX	#B73E37
RGB	rgb(183, 62, 55)
HSL	hsl(3, 54%, 47%)
HSV	hsv(3, 70%, 72%)
CMYK	cmyk(0%, 66.1%, 69.9%, 28.2%)
CIE-LAB	lab(43.93, 48.40, 31.14)
CIE-LCH	lch(43.93, 57.55, 32.76°)
OKLab	oklab(53.52% 0.1405 0.0718)
OKLCH	oklch(53.52% 0.158 27.1)
XYZ	xyz(21.9430, 13.7915, 5.1203)
Luminance	0.1379 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73E37 #37B0B7

analogous

#B73770 #B73E37 #B77E37

triadic

#B73E37 #37B73E #3E37B7

tetradic

#B73E37 #70B737 #37B0B7 #7E37B7

square

#B73E37 #70B737 #37B0B7 #7E37B7

split-complementary

#B73E37 #37B77E #3770B7

monochromatic

#591E1B #882E29 #B73E37 #CE635D #DC908C

Accessibility & contrast

On white

5.59

#B73E37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#B73E37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73E37

5.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73E37	#FFFFFF	#000000	##FFFFFF
##B73E37	1.00	5.59	3.76	5.59
#FFFFFF	5.59	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F5735

Deuteranopia (green-blind)

#7D7233

Tritanopia (blue-blind)

#C91F3D

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #b73e37;
/* rgb */ color: rgb(183, 62, 55);
/* oklch */ color: oklch(53.5% 0.158 27.1);

Tailwind

colors: {
  custom: {
    50: '#d47a6e',
    500: '#b73e37',
    950: '#000000',
  },
}

SCSS

$custom: #b73e37;
$custom-light: #d47a6e;
$custom-dark: #000000;

JSON

{
  "hex": "#b73e37",
  "rgb": {
    "r": 183,
    "g": 62,
    "b": 55
  },
  "hsl": {
    "h": 3.281,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.53523,
    "c": 0.15779,
    "h": 27.1
  },
  "luminance": 0.13788
}

Semantic roles & 50–950 ramp

primary

#B73E37

secondary

#83C3C7

accent

#D5DD4B

background

#FEF7F6

surface

#FCEEEC

border

#D5C9C7

text

#160A07

muted

#847C7A

Preview Lab

Preview with #B73E37

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

Preview Lab → · Contrast checker → · Palette generator →