When choosing what colour to wear for a headshot, it's best to consider a few factors, such as your skin tone, the background of the photograph, and the intended use of the headshot. Here are some tips to help you choose the best colour:

1. Consider your skin tone: You want to choose a colour that complements your skin tone and doesn't clash with it. If you have warm skin tones, such as yellow or olive undertones, you may want to wear colours such as red, orange, or brown. If you have cool skin tones, such as pink or blue undertones, you may want to wear colours such as blue, green, or purple.
2. Think about the background: Consider the colour of the background or backdrop that will be used for the photograph. You want to choose a colour that contrasts with the background, so that you stand out in the photo. If the background is neutral or plain, you have more flexibility in your clothing colour choice.
3. Consider the intended use: If the headshot is for a professional purpose, such as a job application or a corporate profile, it's best to stick to classic, conservative colours such as black, grey, or navy blue. If the headshot is for a more creative purpose, such as acting or modelling, you may have more freedom to experiment with bold colours and patterns.
4. Avoid bright or distracting patterns: Avoid wearing bright or distracting patterns or logos, as they can take the focus away from your face and make the photo look cluttered.

Ultimately, the best colour to wear for a headshot is one that makes you feel confident and comfortable, and that complements your features and the intended use of the photo.