If you work in an office, it's important to choose suits that are professional and appropriate for the workplace. Some classic and versatile colors to consider are navy blue, charcoal, and grey. These colors are neutral and can be worn in a variety of different settings. They are also versatile and can be dressed up or down, depending on the occasion. If your office has a more relaxed dress code, you might also be able to wear suits in other colors, such as olive green, burgundy, or even a muted pattern like a subtle pinstripe. Ultimately, the best colors for your suits will depend on your personal style and the specific dress code of your office. It's always a good idea to check with your employer or HR department to make sure your suits are appropriate for the workplace.