#B73729#B73729

#B73729 is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.5% C 0.167 H 29.9°. Best body text is #FFFFFF at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#B73729
RGB	rgb(183, 55, 41)
HSL	hsl(6, 63%, 44%)
HSV	hsv(6, 78%, 72%)
CMYK	cmyk(0%, 69.9%, 77.6%, 28.2%)
CIE-LAB	lab(42.71, 50.64, 37.76)
CIE-LCH	lch(42.71, 63.17, 36.71°)
OKLab	oklab(52.55% 0.1447 0.0831)
OKLCH	oklch(52.55% 0.167 29.9)
XYZ	xyz(21.2973, 12.9630, 3.4781)
Luminance	0.1296 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73729 #29A9B7

analogous

#B72962 #B73729 #B77E29

triadic

#B73729 #29B737 #3729B7

tetradic

#B73729 #62B729 #29A9B7 #7E29B7

square

#B73729 #62B729 #29A9B7 #7E29B7

split-complementary

#B73729 #29B77E #2962B7

monochromatic

#531913 #85281E #B73729 #D65547 #E18479

Accessibility & contrast

On white

5.85

#B73729 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#B73729 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73729

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73729	#FFFFFF	#000000	##FFFFFF
##B73729	1.00	5.85	3.59	5.85
#FFFFFF	5.85	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5326

Deuteranopia (green-blind)

#7C6F24

Tritanopia (blue-blind)

#CA0635

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b73729;
/* rgb */ color: rgb(183, 55, 41);
/* oklch */ color: oklch(52.5% 0.167 29.9);

Tailwind

colors: {
  custom: {
    50: '#d57664',
    500: '#b73729',
    950: '#000000',
  },
}

SCSS

$custom: #b73729;
$custom-light: #d57664;
$custom-dark: #000000;

JSON

{
  "hex": "#b73729",
  "rgb": {
    "r": 183,
    "g": 55,
    "b": 41
  },
  "hsl": {
    "h": 5.915,
    "s": 63.393,
    "l": 43.922
  },
  "oklch": {
    "l": 0.5255,
    "c": 0.16683,
    "h": 29.9
  },
  "luminance": 0.1296
}

Semantic roles & 50–950 ramp

primary

#B73729

secondary

#73C0C9

accent

#D6E641

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160905

muted

#847B7A

Preview Lab

Preview with #B73729

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

Preview Lab → · Contrast checker → · Palette generator →