#B73540#B73540

#B73540 is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.7% C 0.166 H 20.4°. Best body text is #FFFFFF at 5.84:1 contrast (WCAG AA passes).

Color values

HEX	#B73540
RGB	rgb(183, 53, 64)
HSL	hsl(355, 55%, 46%)
HSV	hsv(355, 71%, 72%)
CMYK	cmyk(0%, 71%, 65%, 28.2%)
CIE-LAB	lab(42.74, 52.53, 24.29)
CIE-LCH	lch(42.74, 57.87, 24.82°)
OKLab	oklab(52.68% 0.1554 0.0578)
OKLCH	oklch(52.68% 0.166 20.4)
XYZ	xyz(21.7292, 12.9868, 6.2120)
Luminance	0.1298 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73540 #35B7AC

analogous

#B73581 #B73540 #B76B35

triadic

#B73540 #40B735 #3540B7

tetradic

#B73540 #81B735 #35B7AC #6B35B7

square

#B73540 #81B735 #35B7AC #6B35B7

split-complementary

#B73540 #35B76B #3581B7

monochromatic

#581A1F #88272F #B73540 #CF5A64 #DD8991

Accessibility & contrast

On white

5.84

#B73540 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#B73540 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73540

5.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73540	#FFFFFF	#000000	##FFFFFF
##B73540	1.00	5.84	3.60	5.84
#FFFFFF	5.84	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#59533F

Deuteranopia (green-blind)

#796F3C

Tritanopia (blue-blind)

#C90C3A

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b73540;
/* rgb */ color: rgb(183, 53, 64);
/* oklch */ color: oklch(52.7% 0.166 20.4);

Tailwind

colors: {
  custom: {
    50: '#d47574',
    500: '#b73540',
    950: '#000000',
  },
}

SCSS

$custom: #b73540;
$custom-light: #d47574;
$custom-dark: #000000;

JSON

{
  "hex": "#b73540",
  "rgb": {
    "r": 183,
    "g": 53,
    "b": 64
  },
  "hsl": {
    "h": 354.923,
    "s": 55.085,
    "l": 46.275
  },
  "oklch": {
    "l": 0.52679,
    "c": 0.16583,
    "h": 20.4
  },
  "luminance": 0.12984
}

Semantic roles & 50–950 ramp

primary

#B73540

secondary

#81C7C1

accent

#DED249

background

#FEF7F7

surface

#FCEDED

border

#D5C8C8

text

#160908

muted

#847B7B

Preview Lab

Preview with #B73540

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

Preview Lab → · Contrast checker → · Palette generator →