#B3221B#B3221B

#B3221B is a mid, vivid red. Relative luminance 0.108; OKLCH L 49.8% C 0.181 H 28.7°. Best body text is #FFFFFF at 6.64:1 contrast (WCAG AA passes).

Color values

HEX#B3221B
RGBrgb(179, 34, 27)
HSLhsl(3, 74%, 40%)
HSVhsv(3, 85%, 70%)
CMYKcmyk(0%, 81%, 84.9%, 29.8%)
CIE-LABlab(39.26, 56.02, 41.61)
CIE-LCHlch(39.26, 69.78, 36.60°)
OKLaboklab(49.8% 0.1592 0.087)
OKLCHoklch(49.8% 0.181 28.7)
XYZxyz(19.3627, 10.8101, 2.1037)
Luminance0.1081 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#B3221B #1BACB3
analogous
#B31B60 #B3221B #B36E1B
triadic
#B3221B #1BB322 #221BB3
tetradic
#B3221B #60B31B #1BACB3 #6E1BB3
square
#B3221B #60B31B #1BACB3 #6E1BB3
split-complementary
#B3221B #1BB36E #1B60B3
monochromatic
#490E0B #7E1813 #B3221B #DF342C #E76761

Accessibility & contrast

On white

6.64
#B3221B on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.16
#B3221B on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3221B
6.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##B3221B#FFFFFF#000000##FFFFFF
##B3221B1.006.643.166.64
#FFFFFF6.641.0021.001.00
#0000003.1621.001.0021.00
##FFFFFF6.641.0021.001.00

Color blindness preview

Protanopia (red-blind)
#514818
Deuteranopia (green-blind)
#756812
Tritanopia (blue-blind)
#C60023
Achromatopsia (no color)
#5C5C5C

Design tokens & code

CSS
--color: #b3221b;
/* rgb */ color: rgb(179, 34, 27);
/* oklch */ color: oklch(49.8% 0.181 28.7);
Tailwind
colors: {
  custom: {
    50: '#d46c59',
    500: '#b3221b',
    950: '#000000',
  },
}
SCSS
$custom: #b3221b;
$custom-light: #d46c59;
$custom-dark: #000000;
JSON
{
  "hex": "#b3221b",
  "rgb": {
    "r": 179,
    "g": 34,
    "b": 27
  },
  "hsl": {
    "h": 2.763,
    "s": 73.786,
    "l": 40.392
  },
  "oklch": {
    "l": 0.49798,
    "c": 0.18143,
    "h": 28.7
  },
  "luminance": 0.10807
}

Semantic roles & 50–950 ramp

primary
#B3221B
secondary
#5EC7CC
accent
#E8F037
background
#FEF6F5
surface
#FDECE9
border
#D5C7C5
text
#160804
muted
#847A79

Preview Lab

Preview with #B3221B

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

Preview Lab → · Contrast checker → · Palette generator →

#B3221B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva