#B13133#B13133

#B13133 is a mid, vivid red. Relative luminance 0.118; OKLCH L 51.0% C 0.165 H 24.4°. Best body text is #FFFFFF at 6.26:1 contrast (WCAG AA passes).

Color values

HEX#B13133
RGBrgb(177, 49, 51)
HSLhsl(359, 57%, 44%)
HSVhsv(359, 72%, 69%)
CMYKcmyk(0%, 72.3%, 71.2%, 30.6%)
CIE-LABlab(40.87, 51.40, 29.62)
CIE-LCHlch(40.87, 59.33, 29.95°)
OKLaboklab(51.01% 0.1499 0.0681)
OKLCHoklch(51.01% 0.165 24.4)
XYZxyz(19.8295, 11.7857, 4.3621)
Luminance0.1178 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#B13133 #31B1AF
analogous
#B13173 #B13133 #B16F31
triadic
#B13133 #33B131 #3133B1
tetradic
#B13133 #73B131 #31B1AF #6F31B1
square
#B13133 #73B131 #31B1AF #6F31B1
split-complementary
#B13133 #31B16F #3173B1
monochromatic
#511617 #812425 #B13133 #CF5152 #DC8082

Accessibility & contrast

On white

6.26
#B13133 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.36
#B13133 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B13133
6.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##B13133#FFFFFF#000000##FFFFFF
##B131331.006.263.366.26
#FFFFFF6.261.0021.001.00
#0000003.3621.001.0021.00
##FFFFFF6.261.0021.001.00

Color blindness preview

Protanopia (red-blind)
#564F32
Deuteranopia (green-blind)
#766A2F
Tritanopia (blue-blind)
#C30033
Achromatopsia (no color)
#606060

Design tokens & code

CSS
--color: #b13133;
/* rgb */ color: rgb(177, 49, 51);
/* oklch */ color: oklch(51.0% 0.165 24.4);
Tailwind
colors: {
  custom: {
    50: '#d0726b',
    500: '#b13133',
    950: '#000000',
  },
}
SCSS
$custom: #b13133;
$custom-light: #d0726b;
$custom-dark: #000000;
JSON
{
  "hex": "#b13133",
  "rgb": {
    "r": 177,
    "g": 49,
    "b": 51
  },
  "hsl": {
    "h": 359.063,
    "s": 56.637,
    "l": 44.314
  },
  "oklch": {
    "l": 0.51014,
    "c": 0.16461,
    "h": 24.4
  },
  "luminance": 0.11783
}

Semantic roles & 50–950 ramp

primary
#B13133
secondary
#79C5C4
accent
#E0DE48
background
#FDF7F6
surface
#FBEDEB
border
#D4C8C6
text
#150806
muted
#837B7A

Preview Lab

Preview with #B13133

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

Preview Lab → · Contrast checker → · Palette generator →

#B13133 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva