#B33031#B33031

#B33031 is a mid, vivid red. Relative luminance 0.119; OKLCH L 51.2% C 0.168 H 25.0°. Best body text is #FFFFFF at 6.21:1 contrast (WCAG AA passes).

Color values

HEX#B33031
RGBrgb(179, 48, 49)
HSLhsl(360, 58%, 45%)
HSVhsv(360, 73%, 70%)
CMYKcmyk(0%, 73.2%, 72.6%, 29.8%)
CIE-LABlab(41.09, 52.31, 31.17)
CIE-LCHlch(41.09, 60.90, 30.79°)
OKLaboklab(51.24% 0.1521 0.071)
OKLCHoklch(51.24% 0.168 25)
XYZxyz(20.2040, 11.9224, 4.1425)
Luminance0.1192 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#B33031 #30B3B2
analogous
#B33073 #B33031 #B37130
triadic
#B33031 #31B330 #3031B3
tetradic
#B33031 #73B330 #30B3B2 #7130B3
square
#B33031 #73B330 #30B3B2 #7130B3
split-complementary
#B33031 #30B371 #3073B3
monochromatic
#521617 #832324 #B33031 #D05051 #DD8081

Accessibility & contrast

On white

6.21
#B33031 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.38
#B33031 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33031
6.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##B33031#FFFFFF#000000##FFFFFF
##B330311.006.213.386.21
#FFFFFF6.211.0021.001.00
#0000003.3821.001.0021.00
##FFFFFF6.211.0021.001.00

Color blindness preview

Protanopia (red-blind)
#564F30
Deuteranopia (green-blind)
#776B2C
Tritanopia (blue-blind)
#C50032
Achromatopsia (no color)
#616161

Design tokens & code

CSS
--color: #b33031;
/* rgb */ color: rgb(179, 48, 49);
/* oklch */ color: oklch(51.2% 0.168 25.0);
Tailwind
colors: {
  custom: {
    50: '#d27269',
    500: '#b33031',
    950: '#000000',
  },
}
SCSS
$custom: #b33031;
$custom-light: #d27269;
$custom-dark: #000000;
JSON
{
  "hex": "#b33031",
  "rgb": {
    "r": 179,
    "g": 48,
    "b": 49
  },
  "hsl": {
    "h": 359.542,
    "s": 57.709,
    "l": 44.51
  },
  "oklch": {
    "l": 0.51237,
    "c": 0.16782,
    "h": 25
  },
  "luminance": 0.11919
}

Semantic roles & 50–950 ramp

primary
#B33031
secondary
#79C6C5
accent
#E1E047
background
#FEF7F6
surface
#FCEDEB
border
#D5C8C6
text
#160806
muted
#847B7A

Preview Lab

Preview with #B33031

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

Preview Lab → · Contrast checker → · Palette generator →

#B33031 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva