#B73B2A#B73B2A

#B73B2A is a mid, vivid red. Relative luminance 0.134; OKLCH L 53.0% C 0.163 H 30.8°. Best body text is #FFFFFF at 5.72:1 contrast (WCAG AA passes).

Color values

HEX	#B73B2A
RGB	rgb(183, 59, 42)
HSL	hsl(7, 63%, 44%)
HSV	hsv(7, 77%, 72%)
CMYK	cmyk(0%, 67.8%, 77%, 28.2%)
CIE-LAB	lab(43.31, 49.07, 37.85)
CIE-LCH	lch(43.31, 61.97, 37.64°)
OKLab	oklab(53% 0.14 0.0836)
OKLCH	oklch(53% 0.163 30.8)
XYZ	xyz(21.5127, 13.3656, 3.6371)
Luminance	0.1336 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73B2A #2AA6B7

analogous

#B72A60 #B73B2A #B7822A

triadic

#B73B2A #2AB73B #3B2AB7

tetradic

#B73B2A #60B72A #2AA6B7 #822AB7

square

#B73B2A #60B72A #2AA6B7 #822AB7

split-complementary

#B73B2A #2AB782 #2A60B7

monochromatic

#531B13 #852B1F #B73B2A #D55A49 #E1877B

Accessibility & contrast

On white

5.72

#B73B2A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#B73B2A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73B2A

5.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73B2A	#FFFFFF	#000000	##FFFFFF
##B73B2A	1.00	5.72	3.67	5.72
#FFFFFF	5.72	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F5527

Deuteranopia (green-blind)

#7D7025

Tritanopia (blue-blind)

#C91438

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b73b2a;
/* rgb */ color: rgb(183, 59, 42);
/* oklch */ color: oklch(53.0% 0.163 30.8);

Tailwind

colors: {
  custom: {
    50: '#d57865',
    500: '#b73b2a',
    950: '#000000',
  },
}

SCSS

$custom: #b73b2a;
$custom-light: #d57865;
$custom-dark: #000000;

JSON

{
  "hex": "#b73b2a",
  "rgb": {
    "r": 183,
    "g": 59,
    "b": 42
  },
  "hsl": {
    "h": 7.234,
    "s": 62.667,
    "l": 44.118
  },
  "oklch": {
    "l": 0.53004,
    "c": 0.163,
    "h": 30.8
  },
  "luminance": 0.13362
}

Semantic roles & 50–950 ramp

primary

#B73B2A

secondary

#74BFC9

accent

#D2E642

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160905

muted

#847B7A

Preview Lab

Preview with #B73B2A

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

Preview Lab → · Contrast checker → · Palette generator →