#B1372B#B1372B

#B1372B is a mid, vivid red. Relative luminance 0.123; OKLCH L 51.5% C 0.160 H 29.3°. Best body text is #FFFFFF at 6.09:1 contrast (WCAG AA passes).

Color values

HEX#B1372B
RGBrgb(177, 55, 43)
HSLhsl(5, 61%, 43%)
HSVhsv(5, 76%, 69%)
CMYKcmyk(0%, 68.9%, 75.7%, 30.6%)
CIE-LABlab(41.62, 48.71, 35.15)
CIE-LCHlch(41.62, 60.07, 35.82°)
OKLaboklab(51.54% 0.1397 0.0784)
OKLCHoklch(51.54% 0.16 29.3)
XYZxyz(19.9359, 12.2569, 3.6011)
Luminance0.1225 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#B1372B #2BA5B1
analogous
#B12B62 #B1372B #B17A2B
triadic
#B1372B #2BB137 #372BB1
tetradic
#B1372B #62B12B #2BA5B1 #7A2BB1
square
#B1372B #62B12B #2BA5B1 #7A2BB1
split-complementary
#B1372B #2BB17A #2B62B1
monochromatic
#4F1813 #80281F #B1372B #D25347 #DE8178

Accessibility & contrast

On white

6.09
#B1372B on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.45
#B1372B on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B1372B
6.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##B1372B#FFFFFF#000000##FFFFFF
##B1372B1.006.093.456.09
#FFFFFF6.091.0021.001.00
#0000003.4521.001.0021.00
##FFFFFF6.091.0021.001.00

Color blindness preview

Protanopia (red-blind)
#5A5129
Deuteranopia (green-blind)
#786C27
Tritanopia (blue-blind)
#C30F35
Achromatopsia (no color)
#626262

Design tokens & code

CSS
--color: #b1372b;
/* rgb */ color: rgb(177, 55, 43);
/* oklch */ color: oklch(51.5% 0.160 29.3);
Tailwind
colors: {
  custom: {
    50: '#d07565',
    500: '#b1372b',
    950: '#000000',
  },
}
SCSS
$custom: #b1372b;
$custom-light: #d07565;
$custom-dark: #000000;
JSON
{
  "hex": "#b1372b",
  "rgb": {
    "r": 177,
    "g": 55,
    "b": 43
  },
  "hsl": {
    "h": 5.373,
    "s": 60.909,
    "l": 43.137
  },
  "oklch": {
    "l": 0.5154,
    "c": 0.16019,
    "h": 29.3
  },
  "luminance": 0.12254
}

Semantic roles & 50–950 ramp

primary
#B1372B
secondary
#72BFC6
accent
#D6E444
background
#FDF7F6
surface
#FBEDEB
border
#D4C8C6
text
#150905
muted
#837B7A

Preview Lab

Preview with #B1372B

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

Preview Lab → · Contrast checker → · Palette generator →

#B1372B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva