#B3281F#B3281F

#B3281F is a mid, vivid red. Relative luminance 0.112; OKLCH L 50.3% C 0.177 H 28.9°. Best body text is #FFFFFF at 6.48:1 contrast (WCAG AA passes).

Color values

HEX#B3281F
RGBrgb(179, 40, 31)
HSLhsl(4, 70%, 41%)
HSVhsv(4, 83%, 70%)
CMYKcmyk(0%, 77.7%, 82.7%, 29.8%)
CIE-LABlab(39.92, 54.35, 40.13)
CIE-LCHlch(39.92, 67.57, 36.44°)
OKLaboklab(50.3% 0.1548 0.0853)
OKLCHoklch(50.3% 0.177 28.9)
XYZxyz(19.5989, 11.2034, 2.4266)
Luminance0.1120 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#B3281F #1FAAB3
analogous
#B31F60 #B3281F #B3721F
triadic
#B3281F #1FB328 #281FB3
tetradic
#B3281F #60B31F #1FAAB3 #721FB3
square
#B3281F #60B31F #1FAAB3 #721FB3
split-complementary
#B3281F #1FB372 #1F60B3
monochromatic
#4B110D #7F1C16 #B3281F #DC3E33 #E56F68

Accessibility & contrast

On white

6.48
#B3281F on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.24
#B3281F on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3281F
6.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##B3281F#FFFFFF#000000##FFFFFF
##B3281F1.006.483.246.48
#FFFFFF6.481.0021.001.00
#0000003.2421.001.0021.00
##FFFFFF6.481.0021.001.00

Color blindness preview

Protanopia (red-blind)
#544B1C
Deuteranopia (green-blind)
#766918
Tritanopia (blue-blind)
#C60028
Achromatopsia (no color)
#5E5E5E

Design tokens & code

CSS
--color: #b3281f;
/* rgb */ color: rgb(179, 40, 31);
/* oklch */ color: oklch(50.3% 0.177 28.9);
Tailwind
colors: {
  custom: {
    50: '#d36e5c',
    500: '#b3281f',
    950: '#000000',
  },
}
SCSS
$custom: #b3281f;
$custom-light: #d36e5c;
$custom-dark: #000000;
JSON
{
  "hex": "#b3281f",
  "rgb": {
    "r": 179,
    "g": 40,
    "b": 31
  },
  "hsl": {
    "h": 3.649,
    "s": 70.476,
    "l": 41.176
  },
  "oklch": {
    "l": 0.50301,
    "c": 0.17672,
    "h": 28.9
  },
  "luminance": 0.112
}

Semantic roles & 50–950 ramp

primary
#B3281F
secondary
#64C4CA
accent
#E2ED3B
background
#FEF7F5
surface
#FCEDE9
border
#D5C8C5
text
#160804
muted
#847B79

Preview Lab

Preview with #B3281F

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

Preview Lab → · Contrast checker → · Palette generator →

#B3281F Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva