For a blue background, choose clothing that gives separation without fighting the backdrop. White is a strong, safe choice for many portraits because it looks clean and fresh and usually keeps attention on the face rather than the background.

Avoid blues close to the backdrop color, since they can blend in. Medium greys can also be weak if their brightness is similar to the background. Very dark clothing can sometimes make the face feel comparatively dull while making the background seem more dominant.

For graduation portraits, school colors can be a good option if they don’t closely match the blue background. Cap-and-gown colors may also guide the choice.

If you want stronger contrast, a warm accent color can work, but avoid colors that clash too aggressively with the blue. A bright yellow can contrast well if the look suits the subject.

Skin tone matters less than overall contrast, color harmony, and lighting. Also watch edge separation: strong backlight or rim light can make hair or shoulders blend into a light blue background if the background is too bright.