#B33B31#B33B31

#B33B31 is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.4% C 0.157 H 28.4°. Best body text is #FFFFFF at 5.86:1 contrast (WCAG AA passes).

Color values

HEX#B33B31
RGBrgb(179, 59, 49)
HSLhsl(5, 57%, 45%)
HSVhsv(5, 73%, 70%)
CMYKcmyk(0%, 67%, 72.6%, 29.8%)
CIE-LABlab(42.67, 48.00, 32.98)
CIE-LCHlch(42.67, 58.24, 34.49°)
OKLaboklab(52.42% 0.1385 0.0749)
OKLCHoklch(52.42% 0.157 28.4)
XYZxyz(20.7110, 12.9364, 4.3115)
Luminance0.1293 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#B33B31 #31A9B3
analogous
#B33168 #B33B31 #B37C31
triadic
#B33B31 #31B33B #3B31B3
tetradic
#B33B31 #68B331 #31A9B3 #7C31B3
square
#B33B31 #68B331 #31A9B3 #7C31B3
split-complementary
#B33B31 #31B37C #3168B3
monochromatic
#531B17 #832B24 #B33B31 #D05B52 #DD8982

Accessibility & contrast

On white

5.86
#B33B31 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.59
#B33B31 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33B31
5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##B33B31#FFFFFF#000000##FFFFFF
##B33B311.005.863.595.86
#FFFFFF5.861.0021.001.00
#0000003.5921.001.0021.00
##FFFFFF5.861.0021.001.00

Color blindness preview

Protanopia (red-blind)
#5D542F
Deuteranopia (green-blind)
#7A6E2D
Tritanopia (blue-blind)
#C5193A
Achromatopsia (no color)
#656565

Design tokens & code

CSS
--color: #b33b31;
/* rgb */ color: rgb(179, 59, 49);
/* oklch */ color: oklch(52.4% 0.157 28.4);
Tailwind
colors: {
  custom: {
    50: '#d17869',
    500: '#b33b31',
    950: '#000000',
  },
}
SCSS
$custom: #b33b31;
$custom-light: #d17869;
$custom-dark: #000000;
JSON
{
  "hex": "#b33b31",
  "rgb": {
    "r": 179,
    "g": 59,
    "b": 49
  },
  "hsl": {
    "h": 4.615,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.52415,
    "c": 0.15745,
    "h": 28.4
  },
  "luminance": 0.12933
}

Semantic roles & 50–950 ramp

primary
#B33B31
secondary
#7AC0C6
accent
#D5E048
background
#FDF7F6
surface
#FBEEEB
border
#D4C9C6
text
#150906
muted
#837B7A

Preview Lab

Preview with #B33B31

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

Preview Lab → · Contrast checker → · Palette generator →

#B33B31 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva