#B73F2B#B73F2B

#B73F2B is a mid, vivid red. Relative luminance 0.138; OKLCH L 53.5% C 0.159 H 31.9°. Best body text is #FFFFFF at 5.59:1 contrast (WCAG AA passes).

Color values

HEX	#B73F2B
RGB	rgb(183, 63, 43)
HSL	hsl(9, 62%, 44%)
HSV	hsv(9, 77%, 72%)
CMYK	cmyk(0%, 65.6%, 76.5%, 28.2%)
CIE-LAB	lab(43.94, 47.42, 37.97)
CIE-LCH	lch(43.94, 60.75, 38.69°)
OKLab	oklab(53.49% 0.135 0.0841)
OKLCH	oklch(53.49% 0.159 31.9)
XYZ	xyz(21.7444, 13.7999, 3.8037)
Luminance	0.1380 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73F2B #2BA3B7

analogous

#B72B5D #B73F2B #B7852B

triadic

#B73F2B #2BB73F #3F2BB7

tetradic

#B73F2B #5DB72B #2BA3B7 #852BB7

square

#B73F2B #5DB72B #2BA3B7 #852BB7

split-complementary

#B73F2B #2BB785 #2B5DB7

monochromatic

#541D14 #852E1F #B73F2B #D55E4B #E08A7C

Accessibility & contrast

On white

5.59

#B73F2B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#B73F2B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73F2B

5.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73F2B	#FFFFFF	#000000	##FFFFFF
##B73F2B	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)

#615728

Deuteranopia (green-blind)

#7F7227

Tritanopia (blue-blind)

#C91E3B

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #b73f2b;
/* rgb */ color: rgb(183, 63, 43);
/* oklch */ color: oklch(53.5% 0.159 31.9);

Tailwind

colors: {
  custom: {
    50: '#d57a66',
    500: '#b73f2b',
    950: '#000000',
  },
}

SCSS

$custom: #b73f2b;
$custom-light: #d57a66;
$custom-dark: #000000;

JSON

{
  "hex": "#b73f2b",
  "rgb": {
    "r": 183,
    "g": 63,
    "b": 43
  },
  "hsl": {
    "h": 8.571,
    "s": 61.947,
    "l": 44.314
  },
  "oklch": {
    "l": 0.53485,
    "c": 0.15905,
    "h": 31.9
  },
  "luminance": 0.13797
}

Semantic roles & 50–950 ramp

primary

#B73F2B

secondary

#75BDC9

accent

#CEE543

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160A06

muted

#847C7A

Preview Lab

Preview with #B73F2B

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

Preview Lab → · Contrast checker → · Palette generator →