#B33121#B33121

#B33121 is a mid, vivid red. Relative luminance 0.119; OKLCH L 51.1% C 0.169 H 30.6°. Best body text is #FFFFFF at 6.22:1 contrast (WCAG AA passes).

Color values

HEX#B33121
RGBrgb(179, 49, 33)
HSLhsl(7, 69%, 42%)
HSVhsv(7, 82%, 70%)
CMYKcmyk(0%, 72.6%, 81.6%, 29.8%)
CIE-LABlab(41.05, 51.34, 40.16)
CIE-LCHlch(41.05, 65.18, 38.03°)
OKLaboklab(51.15% 0.1457 0.0861)
OKLCHoklch(51.15% 0.169 30.6)
XYZxyz(19.9656, 11.8932, 2.6829)
Luminance0.1189 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#B33121 #21A3B3
analogous
#B3215A #B33121 #B37A21
triadic
#B33121 #21B331 #3121B3
tetradic
#B33121 #5AB321 #21A3B3 #7A21B3
square
#B33121 #5AB321 #21A3B3 #7A21B3
split-complementary
#B33121 #21B37A #215AB3
monochromatic
#4C150E #7F2317 #B33121 #DA4937 #E4786B

Accessibility & contrast

On white

6.22
#B33121 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.38
#B33121 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33121
6.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##B33121#FFFFFF#000000##FFFFFF
##B331211.006.223.386.22
#FFFFFF6.221.0021.001.00
#0000003.3821.001.0021.00
##FFFFFF6.221.0021.001.00

Color blindness preview

Protanopia (red-blind)
#584F1E
Deuteranopia (green-blind)
#786B1B
Tritanopia (blue-blind)
#C5002F
Achromatopsia (no color)
#616161

Design tokens & code

CSS
--color: #b33121;
/* rgb */ color: rgb(179, 49, 33);
/* oklch */ color: oklch(51.1% 0.169 30.6);
Tailwind
colors: {
  custom: {
    50: '#d3725e',
    500: '#b33121',
    950: '#000000',
  },
}
SCSS
$custom: #b33121;
$custom-light: #d3725e;
$custom-dark: #000000;
JSON
{
  "hex": "#b33121",
  "rgb": {
    "r": 179,
    "g": 49,
    "b": 33
  },
  "hsl": {
    "h": 6.575,
    "s": 68.868,
    "l": 41.569
  },
  "oklch": {
    "l": 0.51145,
    "c": 0.16925,
    "h": 30.6
  },
  "luminance": 0.1189
}

Semantic roles & 50–950 ramp

primary
#B33121
secondary
#66BFCA
accent
#D8EC3C
background
#FEF7F5
surface
#FCEDE9
border
#D5C8C5
text
#160804
muted
#847B79

Preview Lab

Preview with #B33121

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

Preview Lab → · Contrast checker → · Palette generator →

#B33121 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva