#B73B39#B73B39

#B73B39 is a mid, vivid red. Relative luminance 0.135; OKLCH L 53.2% C 0.161 H 25.2°. Best body text is #FFFFFF at 5.68:1 contrast (WCAG AA passes).

Color values

HEX	#B73B39
RGB	rgb(183, 59, 57)
HSL	hsl(1, 53%, 47%)
HSV	hsv(1, 69%, 72%)
CMYK	cmyk(0%, 67.8%, 68.9%, 28.2%)
CIE-LAB	lab(43.50, 49.76, 29.44)
CIE-LCH	lch(43.50, 57.82, 30.61°)
OKLab	oklab(53.21% 0.1452 0.0684)
OKLCH	oklch(53.21% 0.161 25.2)
XYZ	xyz(21.8332, 13.4938, 5.3250)
Luminance	0.1349 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73B39 #39B5B7

analogous

#B73976 #B73B39 #B77A39

triadic

#B73B39 #39B73B #3B39B7

tetradic

#B73B39 #76B739 #39B5B7 #7A39B7

square

#B73B39 #76B739 #39B5B7 #7A39B7

split-complementary

#B73B39 #39B77A #3976B7

monochromatic

#5A1D1C #882C2A #B73B39 #CD6260 #DC908E

Accessibility & contrast

On white

5.68

#B73B39 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.70

#B73B39 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73B39

5.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73B39	#FFFFFF	#000000	##FFFFFF
##B73B39	1.00	5.68	3.70	5.68
#FFFFFF	5.68	1.00	21.00	1.00
#000000	3.70	21.00	1.00	21.00
##FFFFFF	5.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5638

Deuteranopia (green-blind)

#7C7135

Tritanopia (blue-blind)

#C9193C

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b73b39;
/* rgb */ color: rgb(183, 59, 57);
/* oklch */ color: oklch(53.2% 0.161 25.2);

Tailwind

colors: {
  custom: {
    50: '#d4786f',
    500: '#b73b39',
    950: '#000000',
  },
}

SCSS

$custom: #b73b39;
$custom-light: #d4786f;
$custom-dark: #000000;

JSON

{
  "hex": "#b73b39",
  "rgb": {
    "r": 183,
    "g": 59,
    "b": 57
  },
  "hsl": {
    "h": 0.952,
    "s": 52.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.53206,
    "c": 0.16052,
    "h": 25.2
  },
  "luminance": 0.13491
}

Semantic roles & 50–950 ramp

primary

#B73B39

secondary

#85C6C7

accent

#DADC4C

background

#FEF7F6

surface

#FCEEEC

border

#D5C9C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #B73B39

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

Preview Lab → · Contrast checker → · Palette generator →