#B33831#B33831

#B33831 is a mid, vivid red. Relative luminance 0.126; OKLCH L 52.1% C 0.160 H 27.4°. Best body text is #FFFFFF at 5.95:1 contrast (WCAG AA passes).

Color values

HEX#B33831
RGBrgb(179, 56, 49)
HSLhsl(3, 57%, 45%)
HSVhsv(3, 73%, 70%)
CMYKcmyk(0%, 68.7%, 72.6%, 29.8%)
CIE-LABlab(42.21, 49.24, 32.46)
CIE-LCHlch(42.21, 58.98, 33.39°)
OKLaboklab(52.07% 0.1424 0.0738)
OKLCHoklch(52.07% 0.16 27.4)
XYZxyz(20.5612, 12.6368, 4.2616)
Luminance0.1263 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#B33831 #31ACB3
analogous
#B3316B #B33831 #B37931
triadic
#B33831 #31B338 #3831B3
tetradic
#B33831 #6BB331 #31ACB3 #7931B3
square
#B33831 #6BB331 #31ACB3 #7931B3
split-complementary
#B33831 #31B379 #316BB3
monochromatic
#531A17 #832924 #B33831 #D05852 #DD8782

Accessibility & contrast

On white

5.95
#B33831 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.53
#B33831 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33831
5.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##B33831#FFFFFF#000000##FFFFFF
##B338311.005.953.535.95
#FFFFFF5.951.0021.001.00
#0000003.5321.001.0021.00
##FFFFFF5.951.0021.001.00

Color blindness preview

Protanopia (red-blind)
#5B532F
Deuteranopia (green-blind)
#796D2D
Tritanopia (blue-blind)
#C51237
Achromatopsia (no color)
#646464

Design tokens & code

CSS
--color: #b33831;
/* rgb */ color: rgb(179, 56, 49);
/* oklch */ color: oklch(52.1% 0.160 27.4);
Tailwind
colors: {
  custom: {
    50: '#d27669',
    500: '#b33831',
    950: '#000000',
  },
}
SCSS
$custom: #b33831;
$custom-light: #d27669;
$custom-dark: #000000;
JSON
{
  "hex": "#b33831",
  "rgb": {
    "r": 179,
    "g": 56,
    "b": 49
  },
  "hsl": {
    "h": 3.231,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.52073,
    "c": 0.16036,
    "h": 27.4
  },
  "luminance": 0.12634
}

Semantic roles & 50–950 ramp

primary
#B33831
secondary
#7AC2C6
accent
#D8E048
background
#FDF7F6
surface
#FBEDEB
border
#D4C8C6
text
#160906
muted
#847B7A

Preview Lab

Preview with #B33831

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

Preview Lab → · Contrast checker → · Palette generator →

#B33831 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva