#B3231D#B3231D

#B3231D is a mid, vivid red. Relative luminance 0.109; OKLCH L 49.9% C 0.181 H 28.4°. Best body text is #FFFFFF at 6.61:1 contrast (WCAG AA passes).

Color values

HEX#B3231D
RGBrgb(179, 35, 29)
HSLhsl(2, 72%, 41%)
HSVhsv(2, 84%, 70%)
CMYKcmyk(0%, 80.4%, 83.8%, 29.8%)
CIE-LABlab(39.37, 55.79, 40.67)
CIE-LCHlch(39.37, 69.04, 36.09°)
OKLaboklab(49.89% 0.1589 0.0858)
OKLCHoklch(49.89% 0.181 28.4)
XYZxyz(19.4156, 10.8777, 2.2395)
Luminance0.1087 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#B3231D #1DADB3
analogous
#B31D62 #B3231D #B36E1D
triadic
#B3231D #1DB323 #231DB3
tetradic
#B3231D #62B31D #1DADB3 #6E1DB3
square
#B3231D #62B31D #1DADB3 #6E1DB3
split-complementary
#B3231D #1DB36E #1D62B3
monochromatic
#4A0E0C #7E1914 #B3231D #DD3730 #E66A64

Accessibility & contrast

On white

6.61
#B3231D on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.17
#B3231D on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3231D
6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##B3231D#FFFFFF#000000##FFFFFF
##B3231D1.006.613.176.61
#FFFFFF6.611.0021.001.00
#0000003.1721.001.0021.00
##FFFFFF6.611.0021.001.00

Color blindness preview

Protanopia (red-blind)
#52491A
Deuteranopia (green-blind)
#756815
Tritanopia (blue-blind)
#C60024
Achromatopsia (no color)
#5D5D5D

Design tokens & code

CSS
--color: #b3231d;
/* rgb */ color: rgb(179, 35, 29);
/* oklch */ color: oklch(49.9% 0.181 28.4);
Tailwind
colors: {
  custom: {
    50: '#d46c5b',
    500: '#b3231d',
    950: '#000000',
  },
}
SCSS
$custom: #b3231d;
$custom-light: #d46c5b;
$custom-dark: #000000;
JSON
{
  "hex": "#b3231d",
  "rgb": {
    "r": 179,
    "g": 35,
    "b": 29
  },
  "hsl": {
    "h": 2.4,
    "s": 72.115,
    "l": 40.784
  },
  "oklch": {
    "l": 0.49888,
    "c": 0.18053,
    "h": 28.4
  },
  "luminance": 0.10874
}

Semantic roles & 50–950 ramp

primary
#B3231D
secondary
#61C7CB
accent
#E8EF39
background
#FEF6F5
surface
#FDECE9
border
#D5C7C5
text
#160804
muted
#847A79

Preview Lab

Preview with #B3231D

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

Preview Lab → · Contrast checker → · Palette generator →

#B3231D Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva