#B73A2C#B73A2C

#B73A2C is a mid, vivid red. Relative luminance 0.133; OKLCH L 52.9% C 0.164 H 29.8°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#B73A2C
RGB	rgb(183, 58, 44)
HSL	hsl(6, 61%, 45%)
HSV	hsv(6, 76%, 72%)
CMYK	cmyk(0%, 68.3%, 76%, 28.2%)
CIE-LAB	lab(43.18, 49.56, 36.60)
CIE-LCH	lch(43.18, 61.61, 36.45°)
OKLab	oklab(52.91% 0.1419 0.0814)
OKLCH	oklch(52.91% 0.164 29.8)
XYZ	xyz(21.4985, 13.2784, 3.8134)
Luminance	0.1328 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73A2C #2CA9B7

analogous

#B72C64 #B73A2C #B7802C

triadic

#B73A2C #2CB73A #3A2CB7

tetradic

#B73A2C #64B72C #2CA9B7 #802CB7

square

#B73A2C #64B72C #2CA9B7 #802CB7

split-complementary

#B73A2C #2CB780 #2C64B7

monochromatic

#541B14 #862A20 #B73A2C #D45A4C #E0877E

Accessibility & contrast

On white

5.75

#B73A2C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.66

#B73A2C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73A2C

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73A2C	#FFFFFF	#000000	##FFFFFF
##B73A2C	1.00	5.75	3.66	5.75
#FFFFFF	5.75	1.00	21.00	1.00
#000000	3.66	21.00	1.00	21.00
##FFFFFF	5.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E5529

Deuteranopia (green-blind)

#7D7027

Tritanopia (blue-blind)

#C91238

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b73a2c;
/* rgb */ color: rgb(183, 58, 44);
/* oklch */ color: oklch(52.9% 0.164 29.8);

Tailwind

colors: {
  custom: {
    50: '#d57766',
    500: '#b73a2c',
    950: '#000000',
  },
}

SCSS

$custom: #b73a2c;
$custom-light: #d57766;
$custom-dark: #000000;

JSON

{
  "hex": "#b73a2c",
  "rgb": {
    "r": 183,
    "g": 58,
    "b": 44
  },
  "hsl": {
    "h": 6.043,
    "s": 61.233,
    "l": 44.51
  },
  "oklch": {
    "l": 0.52914,
    "c": 0.16356,
    "h": 29.8
  },
  "luminance": 0.13275
}

Semantic roles & 50–950 ramp

primary

#B73A2C

secondary

#76C0C8

accent

#D4E443

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B73A2C

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

Preview Lab → · Contrast checker → · Palette generator →