#B33F3F#B33F3F

#B33F3F is a mid, vivid red. Relative luminance 0.135; OKLCH L 53.1% C 0.151 H 23.8°. Best body text is #FFFFFF at 5.68:1 contrast (WCAG AA passes).

Color values

HEX#B33F3F
RGBrgb(179, 63, 63)
HSLhsl(0, 48%, 47%)
HSVhsv(0, 65%, 70%)
CMYKcmyk(0%, 64.8%, 64.8%, 29.8%)
CIE-LABlab(43.51, 47.05, 25.71)
CIE-LCHlch(43.51, 53.61, 28.65°)
OKLaboklab(53.11% 0.1383 0.061)
OKLCHoklch(53.11% 0.151 23.8)
XYZxyz(21.2672, 13.5005, 6.1876)
Luminance0.1350 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#B33F3F #3FB3B3
analogous
#B33F79 #B33F3F #B3793F
triadic
#B33F3F #3FB33F #3F3FB3
tetradic
#B33F3F #79B33F #3FB3B3 #793FB3
square
#B33F3F #79B33F #3FB3B3 #793FB3
split-complementary
#B33F3F #3FB379 #3F79B3
monochromatic
#581F1F #862F2F #B33F3F #C96666 #D99393

Accessibility & contrast

On white

5.68
#B33F3F on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.70
#B33F3F on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33F3F
5.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##B33F3F#FFFFFF#000000##FFFFFF
##B33F3F1.005.683.705.68
#FFFFFF5.681.0021.001.00
#0000003.7021.001.0021.00
##FFFFFF5.681.0021.001.00

Color blindness preview

Protanopia (red-blind)
#5E573E
Deuteranopia (green-blind)
#7B703C
Tritanopia (blue-blind)
#C42540
Achromatopsia (no color)
#676767

Design tokens & code

CSS
--color: #b33f3f;
/* rgb */ color: rgb(179, 63, 63);
/* oklch */ color: oklch(53.1% 0.151 23.8);
Tailwind
colors: {
  custom: {
    50: '#d07a74',
    500: '#b33f3f',
    950: '#000000',
  },
}
SCSS
$custom: #b33f3f;
$custom-light: #d07a74;
$custom-dark: #000000;
JSON
{
  "hex": "#b33f3f",
  "rgb": {
    "r": 179,
    "g": 63,
    "b": 63
  },
  "hsl": {
    "h": 0,
    "s": 47.934,
    "l": 47.451
  },
  "oklch": {
    "l": 0.53111,
    "c": 0.15121,
    "h": 23.8
  },
  "luminance": 0.13498
}

Semantic roles & 50–950 ramp

primary
#B33F3F
secondary
#89C4C4
accent
#D8D850
background
#FDF7F7
surface
#FBEEED
border
#D4C9C8
text
#150A08
muted
#837C7B

Preview Lab

Preview with #B33F3F

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

Preview Lab → · Contrast checker → · Palette generator →

#B33F3F Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva