#B73F2C#B73F2C

#B73F2C is a mid, vivid red. Relative luminance 0.138; OKLCH L 53.5% C 0.159 H 31.6°. Best body text is #FFFFFF at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#B73F2C
RGB	rgb(183, 63, 44)
HSL	hsl(8, 61%, 45%)
HSV	hsv(8, 76%, 72%)
CMYK	cmyk(0%, 65.6%, 76%, 28.2%)
CIE-LAB	lab(43.96, 47.46, 37.44)
CIE-LCH	lch(43.96, 60.45, 38.27°)
OKLab	oklab(53.5% 0.1353 0.0832)
OKLCH	oklch(53.5% 0.159 31.6)
XYZ	xyz(21.7630, 13.8073, 3.9015)
Luminance	0.1380 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73F2C #2CA4B7

analogous

#B72C5F #B73F2C #B7842C

triadic

#B73F2C #2CB73F #3F2CB7

tetradic

#B73F2C #5FB72C #2CA4B7 #842CB7

square

#B73F2C #5FB72C #2CA4B7 #842CB7

split-complementary

#B73F2C #2CB784 #2C5FB7

monochromatic

#541D14 #862E20 #B73F2C #D45F4C #E08B7E

Accessibility & contrast

On white

5.58

#B73F2C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#B73F2C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73F2C

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73F2C	#FFFFFF	#000000	##FFFFFF
##B73F2C	1.00	5.58	3.76	5.58
#FFFFFF	5.58	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#615729

Deuteranopia (green-blind)

#7F7228

Tritanopia (blue-blind)

#C91E3B

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #b73f2c;
/* rgb */ color: rgb(183, 63, 44);
/* oklch */ color: oklch(53.5% 0.159 31.6);

Tailwind

colors: {
  custom: {
    50: '#d57a66',
    500: '#b73f2c',
    950: '#000000',
  },
}

SCSS

$custom: #b73f2c;
$custom-light: #d57a66;
$custom-dark: #000000;

JSON

{
  "hex": "#b73f2c",
  "rgb": {
    "r": 183,
    "g": 63,
    "b": 44
  },
  "hsl": {
    "h": 8.201,
    "s": 61.233,
    "l": 44.51
  },
  "oklch": {
    "l": 0.53496,
    "c": 0.15885,
    "h": 31.6
  },
  "luminance": 0.13804
}

Semantic roles & 50–950 ramp

primary

#B73F2C

secondary

#76BDC8

accent

#CEE443

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160A06

muted

#847C7A

Preview Lab

Preview with #B73F2C

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

Preview Lab → · Contrast checker → · Palette generator →