#B73A3F#B73A3F

#B73A3F is a mid, vivid red. Relative luminance 0.135; OKLCH L 53.2% C 0.161 H 22.3°. Best body text is #FFFFFF at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#B73A3F
RGB	rgb(183, 58, 63)
HSL	hsl(358, 52%, 47%)
HSV	hsv(358, 68%, 72%)
CMYK	cmyk(0%, 68.3%, 65.6%, 28.2%)
CIE-LAB	lab(43.44, 50.51, 25.78)
CIE-LCH	lch(43.44, 56.70, 27.04°)
OKLab	oklab(53.19% 0.1488 0.0611)
OKLCH	oklch(53.19% 0.161 22.3)
XYZ	xyz(21.9410, 13.4554, 6.1435)
Luminance	0.1345 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73A3F #3AB7B2

analogous

#B73A7E #B73A3F #B7743A

triadic

#B73A3F #3FB73A #3A3FB7

tetradic

#B73A3F #7EB73A #3AB7B2 #743AB7

square

#B73A3F #7EB73A #3AB7B2 #743AB7

split-complementary

#B73A3F #3AB774 #3A7EB7

monochromatic

#5A1D1F #892B2F #B73A3F #CD6166 #DC9093

Accessibility & contrast

On white

5.69

#B73A3F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#B73A3F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73A3F

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73A3F	#FFFFFF	#000000	##FFFFFF
##B73A3F	1.00	5.69	3.69	5.69
#FFFFFF	5.69	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C563E

Deuteranopia (green-blind)

#7B703B

Tritanopia (blue-blind)

#C9193D

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b73a3f;
/* rgb */ color: rgb(183, 58, 63);
/* oklch */ color: oklch(53.2% 0.161 22.3);

Tailwind

colors: {
  custom: {
    50: '#d47874',
    500: '#b73a3f',
    950: '#000000',
  },
}

SCSS

$custom: #b73a3f;
$custom-light: #d47874;
$custom-dark: #000000;

JSON

{
  "hex": "#b73a3f",
  "rgb": {
    "r": 183,
    "g": 58,
    "b": 63
  },
  "hsl": {
    "h": 357.6,
    "s": 51.867,
    "l": 47.255
  },
  "oklch": {
    "l": 0.53194,
    "c": 0.16083,
    "h": 22.3
  },
  "luminance": 0.13452
}

Semantic roles & 50–950 ramp

primary

#B73A3F

secondary

#86C7C4

accent

#DBD64C

background

#FEF7F7

surface

#FCEEED

border

#D5C9C8

text

#160908

muted

#847B7B

Preview Lab

Preview with #B73A3F

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

Preview Lab → · Contrast checker → · Palette generator →