#B33137#B33137

#B33137 is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.4% C 0.166 H 22.9°. Best body text is #FFFFFF at 6.16:1 contrast (WCAG AA passes).

Color values

HEX#B33137
RGBrgb(179, 49, 55)
HSLhsl(357, 57%, 45%)
HSVhsv(357, 73%, 70%)
CMYKcmyk(0%, 72.6%, 69.3%, 29.8%)
CIE-LABlab(41.31, 52.24, 27.83)
CIE-LCHlch(41.31, 59.19, 28.04°)
OKLaboklab(51.43% 0.1532 0.0647)
OKLCHoklch(51.43% 0.166 22.9)
XYZxyz(20.3805, 12.0592, 4.8682)
Luminance0.1206 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#B33137 #31B3AD
analogous
#B33178 #B33137 #B36C31
triadic
#B33137 #37B331 #3137B3
tetradic
#B33137 #78B331 #31B3AD #6C31B3
square
#B33137 #78B331 #31B3AD #6C31B3
split-complementary
#B33137 #31B36C #3178B3
monochromatic
#531719 #832428 #B33137 #D05257 #DD8286

Accessibility & contrast

On white

6.16
#B33137 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.41
#B33137 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33137
6.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##B33137#FFFFFF#000000##FFFFFF
##B331371.006.163.416.16
#FFFFFF6.161.0021.001.00
#0000003.4121.001.0021.00
##FFFFFF6.161.0021.001.00

Color blindness preview

Protanopia (red-blind)
#565036
Deuteranopia (green-blind)
#776C33
Tritanopia (blue-blind)
#C50035
Achromatopsia (no color)
#616161

Design tokens & code

CSS
--color: #b33137;
/* rgb */ color: rgb(179, 49, 55);
/* oklch */ color: oklch(51.4% 0.166 22.9);
Tailwind
colors: {
  custom: {
    50: '#d2736e',
    500: '#b33137',
    950: '#000000',
  },
}
SCSS
$custom: #b33137;
$custom-light: #d2736e;
$custom-dark: #000000;
JSON
{
  "hex": "#b33137",
  "rgb": {
    "r": 179,
    "g": 49,
    "b": 55
  },
  "hsl": {
    "h": 357.231,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.51427,
    "c": 0.16625,
    "h": 22.9
  },
  "luminance": 0.12056
}

Semantic roles & 50–950 ramp

primary
#B33137
secondary
#7AC6C2
accent
#E0D948
background
#FDF7F6
surface
#FBEDEB
border
#D4C8C6
text
#150907
muted
#837B7A

Preview Lab

Preview with #B33137

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

Preview Lab → · Contrast checker → · Palette generator →

#B33137 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva