#B73F2A#B73F2A

#B73F2A is a mid, vivid red. Relative luminance 0.138; OKLCH L 53.5% C 0.159 H 32.3°. Best body text is #FFFFFF at 5.59:1 contrast (WCAG AA passes).

Color values

HEX	#B73F2A
RGB	rgb(183, 63, 42)
HSL	hsl(9, 63%, 44%)
HSV	hsv(9, 77%, 72%)
CMYK	cmyk(0%, 65.6%, 77%, 28.2%)
CIE-LAB	lab(43.93, 47.38, 38.51)
CIE-LCH	lch(43.93, 61.05, 39.10°)
OKLab	oklab(53.47% 0.1347 0.085)
OKLCH	oklch(53.47% 0.159 32.3)
XYZ	xyz(21.7263, 13.7926, 3.7083)
Luminance	0.1379 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73F2A #2AA2B7

analogous

#B72A5C #B73F2A #B7862A

triadic

#B73F2A #2AB73F #3F2AB7

tetradic

#B73F2A #5CB72A #2AA2B7 #862AB7

square

#B73F2A #5CB72A #2AA2B7 #862AB7

split-complementary

#B73F2A #2AB786 #2A5CB7

monochromatic

#531D13 #852E1F #B73F2A #D55E49 #E18A7B

Accessibility & contrast

On white

5.59

#B73F2A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#B73F2A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73F2A

5.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73F2A	#FFFFFF	#000000	##FFFFFF
##B73F2A	1.00	5.59	3.76	5.59
#FFFFFF	5.59	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#615727

Deuteranopia (green-blind)

#7F7226

Tritanopia (blue-blind)

#C91D3B

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #b73f2a;
/* rgb */ color: rgb(183, 63, 42);
/* oklch */ color: oklch(53.5% 0.159 32.3);

Tailwind

colors: {
  custom: {
    50: '#d57a65',
    500: '#b73f2a',
    950: '#000000',
  },
}

SCSS

$custom: #b73f2a;
$custom-light: #d57a65;
$custom-dark: #000000;

JSON

{
  "hex": "#b73f2a",
  "rgb": {
    "r": 183,
    "g": 63,
    "b": 42
  },
  "hsl": {
    "h": 8.936,
    "s": 62.667,
    "l": 44.118
  },
  "oklch": {
    "l": 0.53474,
    "c": 0.15925,
    "h": 32.3
  },
  "luminance": 0.13789
}

Semantic roles & 50–950 ramp

primary

#B73F2A

secondary

#74BCC9

accent

#CDE642

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160A05

muted

#847C7A

Preview Lab

Preview with #B73F2A

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

Preview Lab → · Contrast checker → · Palette generator →