#B73B3A#B73B3A

#B73B3A is a mid, vivid red. Relative luminance 0.135; OKLCH L 53.2% C 0.160 H 24.8°. Best body text is #FFFFFF at 5.68:1 contrast (WCAG AA passes).

Color values

HEX	#B73B3A
RGB	rgb(183, 59, 58)
HSL	hsl(0, 52%, 47%)
HSV	hsv(0, 68%, 72%)
CMYK	cmyk(0%, 67.8%, 68.3%, 28.2%)
CIE-LAB	lab(43.51, 49.81, 28.87)
CIE-LCH	lch(43.51, 57.57, 30.09°)
OKLab	oklab(53.22% 0.1456 0.0673)
OKLCH	oklch(53.22% 0.16 24.8)
XYZ	xyz(21.8584, 13.5038, 5.4577)
Luminance	0.1350 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73B3A #3AB6B7

analogous

#B73A78 #B73B3A #B77A3A

triadic

#B73B3A #3AB73B #3B3AB7

tetradic

#B73B3A #78B73A #3AB6B7 #7A3AB7

square

#B73B3A #78B73A #3AB6B7 #7A3AB7

split-complementary

#B73B3A #3AB77A #3A78B7

monochromatic

#5A1D1D #892C2B #B73B3A #CD6261 #DC9090

Accessibility & contrast

On white

5.68

#B73B3A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.70

#B73B3A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73B3A

5.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73B3A	#FFFFFF	#000000	##FFFFFF
##B73B3A	1.00	5.68	3.70	5.68
#FFFFFF	5.68	1.00	21.00	1.00
#000000	3.70	21.00	1.00	21.00
##FFFFFF	5.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5639

Deuteranopia (green-blind)

#7C7136

Tritanopia (blue-blind)

#C9193C

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b73b3a;
/* rgb */ color: rgb(183, 59, 58);
/* oklch */ color: oklch(53.2% 0.160 24.8);

Tailwind

colors: {
  custom: {
    50: '#d47870',
    500: '#b73b3a',
    950: '#000000',
  },
}

SCSS

$custom: #b73b3a;
$custom-light: #d47870;
$custom-dark: #000000;

JSON

{
  "hex": "#b73b3a",
  "rgb": {
    "r": 183,
    "g": 59,
    "b": 58
  },
  "hsl": {
    "h": 0.48,
    "s": 51.867,
    "l": 47.255
  },
  "oklch": {
    "l": 0.53222,
    "c": 0.16037,
    "h": 24.8
  },
  "luminance": 0.13501
}

Semantic roles & 50–950 ramp

primary

#B73B3A

secondary

#86C6C7

accent

#DADB4C

background

#FEF7F6

surface

#FCEEEC

border

#D5C9C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #B73B3A

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

Preview Lab → · Contrast checker → · Palette generator →