#B73A45#B73A45

#B73A45 is a mid, vivid red. Relative luminance 0.135; OKLCH L 53.3% C 0.160 H 19.6°. Best body text is #FFFFFF at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#B73A45
RGB	rgb(183, 58, 69)
HSL	hsl(355, 52%, 47%)
HSV	hsv(355, 68%, 72%)
CMYK	cmyk(0%, 68.3%, 62.3%, 28.2%)
CIE-LAB	lab(43.55, 50.88, 22.26)
CIE-LCH	lch(43.55, 55.54, 23.63°)
OKLab	oklab(53.31% 0.1512 0.0537)
OKLCH	oklch(53.31% 0.16 19.6)
XYZ	xyz(22.1179, 13.5262, 7.0752)
Luminance	0.1352 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73A45 #3AB7AC

analogous

#B73A84 #B73A45 #B76E3A

triadic

#B73A45 #45B73A #3A45B7

tetradic

#B73A45 #84B73A #3AB7AC #6E3AB7

square

#B73A45 #84B73A #3AB7AC #6E3AB7

split-complementary

#B73A45 #3AB76E #3A84B7

monochromatic

#5A1D22 #892B33 #B73A45 #CD616B #DC9096

Accessibility & contrast

On white

5.67

#B73A45 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.70

#B73A45 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73A45

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73A45	#FFFFFF	#000000	##FFFFFF
##B73A45	1.00	5.67	3.70	5.67
#FFFFFF	5.67	1.00	21.00	1.00
#000000	3.70	21.00	1.00	21.00
##FFFFFF	5.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B5645

Deuteranopia (green-blind)

#7B7142

Tritanopia (blue-blind)

#C81B3F

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b73a45;
/* rgb */ color: rgb(183, 58, 69);
/* oklch */ color: oklch(53.3% 0.160 19.6);

Tailwind

colors: {
  custom: {
    50: '#d37878',
    500: '#b73a45',
    950: '#000000',
  },
}

SCSS

$custom: #b73a45;
$custom-light: #d37878;
$custom-dark: #000000;

JSON

{
  "hex": "#b73a45",
  "rgb": {
    "r": 183,
    "g": 58,
    "b": 69
  },
  "hsl": {
    "h": 354.72,
    "s": 51.867,
    "l": 47.255
  },
  "oklch": {
    "l": 0.53306,
    "c": 0.16041,
    "h": 19.6
  },
  "luminance": 0.13523
}

Semantic roles & 50–950 ramp

primary

#B73A45

secondary

#86C7C1

accent

#DBCF4C

background

#FDF7F7

surface

#FBEEED

border

#D4C9C8

text

#150909

muted

#837B7B

Preview Lab

Preview with #B73A45

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

Preview Lab → · Contrast checker → · Palette generator →