Can one wear a coloured bow tie with a tuxedo?

While black is the traditional and most common colour for a bow tie to be worn with a tuxedo, it is not uncommon for men to wear a coloured bow tie with a tuxedo, especially in less formal settings.

Coloured bow ties can be worn with a tuxedo as long as it's in the same colour family as the tuxedo. For example, a navy blue bow tie will look good with a navy blue tuxedo. A bow tie in a contrasting colour can also look good, such as a black tuxedo with a red bow tie, as long as the colour combination is well-matched and the overall look is still formal.

It's important to note that a coloured bow tie is considered less formal and if you are going to a really formal event it may not be the best choice. However, if you are going to a less formal event or have a creative or fashion-forward sense of style, a coloured bow tie can be a stylish and unique way to add some personality to your formal look.