#B13333#B13333

#B13333 is a mid, vivid red. Relative luminance 0.120; OKLCH L 51.2% C 0.163 H 25.0°. Best body text is #FFFFFF at 6.19:1 contrast (WCAG AA passes).

Color values

HEX#B13333
RGBrgb(177, 51, 51)
HSLhsl(0, 55%, 45%)
HSVhsv(0, 71%, 69%)
CMYKcmyk(0%, 71.2%, 71.2%, 30.6%)
CIE-LABlab(41.15, 50.65, 29.95)
CIE-LCHlch(41.15, 58.84, 30.59°)
OKLaboklab(51.22% 0.1475 0.0688)
OKLCHoklch(51.22% 0.163 25)
XYZxyz(19.9150, 11.9567, 4.3906)
Luminance0.1195 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#B13333 #33B1B1
analogous
#B13372 #B13333 #B17233
triadic
#B13333 #33B133 #3333B1
tetradic
#B13333 #72B133 #33B1B1 #7233B1
square
#B13333 #72B133 #33B1B1 #7233B1
split-complementary
#B13333 #33B172 #3372B1
monochromatic
#521818 #812525 #B13333 #CE5454 #DB8383

Accessibility & contrast

On white

6.19
#B13333 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.39
#B13333 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B13333
6.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##B13333#FFFFFF#000000##FFFFFF
##B133331.006.193.396.19
#FFFFFF6.191.0021.001.00
#0000003.3921.001.0021.00
##FFFFFF6.191.0021.001.00

Color blindness preview

Protanopia (red-blind)
#575032
Deuteranopia (green-blind)
#766B2F
Tritanopia (blue-blind)
#C30435
Achromatopsia (no color)
#616161

Design tokens & code

CSS
--color: #b13333;
/* rgb */ color: rgb(177, 51, 51);
/* oklch */ color: oklch(51.2% 0.163 25.0);
Tailwind
colors: {
  custom: {
    50: '#d0736b',
    500: '#b13333',
    950: '#000000',
  },
}
SCSS
$custom: #b13333;
$custom-light: #d0736b;
$custom-dark: #000000;
JSON
{
  "hex": "#b13333",
  "rgb": {
    "r": 177,
    "g": 51,
    "b": 51
  },
  "hsl": {
    "h": 0,
    "s": 55.263,
    "l": 44.706
  },
  "oklch": {
    "l": 0.51218,
    "c": 0.16274,
    "h": 25
  },
  "luminance": 0.11954
}

Semantic roles & 50–950 ramp

primary
#B13333
secondary
#7BC5C5
accent
#DFDF49
background
#FDF7F6
surface
#FBEDEB
border
#D4C8C6
text
#150906
muted
#837B7A

Preview Lab

Preview with #B13333

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

Preview Lab → · Contrast checker → · Palette generator →

#B13333 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva