#B73837#B73837

#B73837 is a mid, vivid red. Relative luminance 0.132; OKLCH L 52.8% C 0.164 H 25.1°. Best body text is #FFFFFF at 5.78:1 contrast (WCAG AA passes).

Color values

HEX#B73837
RGBrgb(183, 56, 55)
HSLhsl(0, 54%, 47%)
HSVhsv(0, 70%, 72%)
CMYKcmyk(0%, 69.4%, 69.9%, 28.2%)
CIE-LABlab(43.03, 50.87, 30.06)
CIE-LCHlch(43.03, 59.09, 30.58°)
OKLaboklab(52.84% 0.1483 0.0695)
OKLCHoklch(52.84% 0.164 25.1)
XYZxyz(21.6345, 13.1746, 5.0175)
Luminance0.1317 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#B73837 #37B6B7
analogous
#B73776 #B73837 #B77837
triadic
#B73837 #37B738 #3837B7
tetradic
#B73837 #76B737 #37B6B7 #7837B7
square
#B73837 #76B737 #37B6B7 #7837B7
split-complementary
#B73837 #37B778 #3776B7
monochromatic
#591B1B #882A29 #B73837 #CE5E5D #DC8D8C

Accessibility & contrast

On white

5.78
#B73837 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.63
#B73837 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73837
5.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##B73837#FFFFFF#000000##FFFFFF
##B738371.005.783.635.78
#FFFFFF5.781.0021.001.00
#0000003.6321.001.0021.00
##FFFFFF5.781.0021.001.00

Color blindness preview

Protanopia (red-blind)
#5C5436
Deuteranopia (green-blind)
#7B7033
Tritanopia (blue-blind)
#C91039
Achromatopsia (no color)
#666666

Design tokens & code

CSS
--color: #b73837;
/* rgb */ color: rgb(183, 56, 55);
/* oklch */ color: oklch(52.8% 0.164 25.1);
Tailwind
colors: {
  custom: {
    50: '#d4776e',
    500: '#b73837',
    950: '#000000',
  },
}
SCSS
$custom: #b73837;
$custom-light: #d4776e;
$custom-dark: #000000;
JSON
{
  "hex": "#b73837",
  "rgb": {
    "r": 183,
    "g": 56,
    "b": 55
  },
  "hsl": {
    "h": 0.469,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.52843,
    "c": 0.16374,
    "h": 25.1
  },
  "luminance": 0.13171
}

Semantic roles & 50–950 ramp

primary
#B73837
secondary
#83C6C7
accent
#DCDD4B
background
#FEF7F6
surface
#FCEEEB
border
#D5C9C6
text
#160907
muted
#847B7A

Preview Lab

Preview with #B73837

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

Preview Lab → · Contrast checker → · Palette generator →

#B73837 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva