#B73731#B73731

#B73731 is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.6% C 0.166 H 27.1°. Best body text is #FFFFFF at 5.83:1 contrast (WCAG AA passes).

Color values

HEX#B73731
RGBrgb(183, 55, 49)
HSLhsl(3, 58%, 45%)
HSVhsv(3, 73%, 72%)
CMYKcmyk(0%, 69.9%, 73.2%, 28.2%)
CIE-LABlab(42.80, 50.97, 33.33)
CIE-LCHlch(42.80, 60.90, 33.18°)
OKLaboklab(52.65% 0.1474 0.0754)
OKLCHoklch(52.65% 0.166 27.1)
XYZxyz(21.4514, 13.0246, 4.2896)
Luminance0.1302 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#B73731 #31B1B7
analogous
#B7316E #B73731 #B77A31
triadic
#B73731 #31B737 #3731B7
tetradic
#B73731 #6EB731 #31B1B7 #7A31B7
square
#B73731 #6EB731 #31B1B7 #7A31B7
split-complementary
#B73731 #31B77A #316EB7
monochromatic
#561A17 #872824 #B73731 #D15A54 #DE8884

Accessibility & contrast

On white

5.83
#B73731 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.60
#B73731 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73731
5.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##B73731#FFFFFF#000000##FFFFFF
##B737311.005.833.605.83
#FFFFFF5.831.0021.001.00
#0000003.6021.001.0021.00
##FFFFFF5.831.0021.001.00

Color blindness preview

Protanopia (red-blind)
#5C532F
Deuteranopia (green-blind)
#7C6F2D
Tritanopia (blue-blind)
#C90A37
Achromatopsia (no color)
#656565

Design tokens & code

CSS
--color: #b73731;
/* rgb */ color: rgb(183, 55, 49);
/* oklch */ color: oklch(52.6% 0.166 27.1);
Tailwind
colors: {
  custom: {
    50: '#d57669',
    500: '#b73731',
    950: '#000000',
  },
}
SCSS
$custom: #b73731;
$custom-light: #d57669;
$custom-dark: #000000;
JSON
{
  "hex": "#b73731",
  "rgb": {
    "r": 183,
    "g": 55,
    "b": 49
  },
  "hsl": {
    "h": 2.687,
    "s": 57.759,
    "l": 45.49
  },
  "oklch": {
    "l": 0.52649,
    "c": 0.16554,
    "h": 27.1
  },
  "luminance": 0.13021
}

Semantic roles & 50–950 ramp

primary
#B73731
secondary
#7CC4C8
accent
#DAE147
background
#FEF7F6
surface
#FCEDEB
border
#D5C8C6
text
#160906
muted
#847B7A

Preview Lab

Preview with #B73731

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

Preview Lab → · Contrast checker → · Palette generator →

#B73731 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva