The best colours to buy in a leather jacket are:

1. Black

2. Brown

3. White

4. Red

If you want something that works for both casual and formal, a black leather jacket might be the best choice. However, for a timeless and relaxed vintage charm, you can go for a Brown leather Jacket. For a bold look, a red leather jacket is a good option, and for a more sophisticated, cleaner look, you can choose a white leather jacket. Besides that, you must also decide according to your skin tone and your wardrobe collection.