#B13031#B13031

#B13031 is a mid, vivid red. Relative luminance 0.117; OKLCH L 50.9% C 0.166 H 24.9°. Best body text is #FFFFFF at 6.29:1 contrast (WCAG AA passes).

Color values

HEX#B13031
RGBrgb(177, 48, 49)
HSLhsl(360, 57%, 44%)
HSVhsv(360, 73%, 69%)
CMYKcmyk(0%, 72.9%, 72.3%, 30.6%)
CIE-LABlab(40.71, 51.68, 30.63)
CIE-LCHlch(40.71, 60.07, 30.66°)
OKLaboklab(50.89% 0.1503 0.0699)
OKLCHoklch(50.89% 0.166 24.9)
XYZxyz(19.7450, 11.6858, 4.1210)
Luminance0.1168 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#B13031 #30B1B0
analogous
#B13072 #B13031 #B17030
triadic
#B13031 #31B130 #3031B1
tetradic
#B13031 #72B130 #30B1B0 #7030B1
square
#B13031 #72B130 #30B1B0 #7030B1
split-complementary
#B13031 #30B170 #3072B1
monochromatic
#511616 #812324 #B13031 #CF4F50 #DC7F80

Accessibility & contrast

On white

6.29
#B13031 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.34
#B13031 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B13031
6.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##B13031#FFFFFF#000000##FFFFFF
##B130311.006.293.346.29
#FFFFFF6.291.0021.001.00
#0000003.3421.001.0021.00
##FFFFFF6.291.0021.001.00

Color blindness preview

Protanopia (red-blind)
#554E30
Deuteranopia (green-blind)
#766A2D
Tritanopia (blue-blind)
#C30032
Achromatopsia (no color)
#606060

Design tokens & code

CSS
--color: #b13031;
/* rgb */ color: rgb(177, 48, 49);
/* oklch */ color: oklch(50.9% 0.166 24.9);
Tailwind
colors: {
  custom: {
    50: '#d07269',
    500: '#b13031',
    950: '#000000',
  },
}
SCSS
$custom: #b13031;
$custom-light: #d07269;
$custom-dark: #000000;
JSON
{
  "hex": "#b13031",
  "rgb": {
    "r": 177,
    "g": 48,
    "b": 49
  },
  "hsl": {
    "h": 359.535,
    "s": 57.333,
    "l": 44.118
  },
  "oklch": {
    "l": 0.50885,
    "c": 0.16577,
    "h": 24.9
  },
  "luminance": 0.11683
}

Semantic roles & 50–950 ramp

primary
#B13031
secondary
#78C5C5
accent
#E1DF47
background
#FDF7F6
surface
#FBEDEB
border
#D4C8C6
text
#150806
muted
#837B7A

Preview Lab

Preview with #B13031

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

Preview Lab → · Contrast checker → · Palette generator →

#B13031 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva