#B73639#B73639

#B73639 is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.7% C 0.165 H 23.7°. Best body text is #FFFFFF at 5.83:1 contrast (WCAG AA passes).

Color values

HEX	#B73639
RGB	rgb(183, 54, 57)
HSL	hsl(359, 54%, 46%)
HSV	hsv(359, 70%, 72%)
CMYK	cmyk(0%, 70.5%, 68.9%, 28.2%)
CIE-LAB	lab(42.77, 51.75, 28.56)
CIE-LCH	lch(42.77, 59.11, 28.90°)
OKLab	oklab(52.66% 0.1515 0.0665)
OKLCH	oklch(52.66% 0.165 23.7)
XYZ	xyz(21.5885, 13.0042, 5.2434)
Luminance	0.1300 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73639 #36B7B4

analogous

#B7367A #B73639 #B77436

triadic

#B73639 #39B736 #3639B7

tetradic

#B73639 #7AB736 #36B7B4 #7436B7

square

#B73639 #7AB736 #36B7B4 #7436B7

split-complementary

#B73639 #36B774 #367AB7

monochromatic

#581A1C #88282A #B73639 #CF5B5E #DD8B8D

Accessibility & contrast

On white

5.83

#B73639 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#B73639 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73639

5.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73639	#FFFFFF	#000000	##FFFFFF
##B73639	1.00	5.83	3.60	5.83
#FFFFFF	5.83	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5338

Deuteranopia (green-blind)

#7B6F35

Tritanopia (blue-blind)

#C90B38

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b73639;
/* rgb */ color: rgb(183, 54, 57);
/* oklch */ color: oklch(52.7% 0.165 23.7);

Tailwind

colors: {
  custom: {
    50: '#d4766f',
    500: '#b73639',
    950: '#000000',
  },
}

SCSS

$custom: #b73639;
$custom-light: #d4766f;
$custom-dark: #000000;

JSON

{
  "hex": "#b73639",
  "rgb": {
    "r": 183,
    "g": 54,
    "b": 57
  },
  "hsl": {
    "h": 358.605,
    "s": 54.43,
    "l": 46.471
  },
  "oklch": {
    "l": 0.52662,
    "c": 0.16545,
    "h": 23.7
  },
  "luminance": 0.13001
}

Semantic roles & 50–950 ramp

primary

#B73639

secondary

#82C7C5

accent

#DEDA4A

background

#FEF7F6

surface

#FCEDEC

border

#D5C8C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #B73639

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

Preview Lab → · Contrast checker → · Palette generator →