Yes, men's light blue suit jackets can be appropriate for weddings, especially when paired with the matching light blue dress plants. Depending on the formality and dress code of the wedding, a light blue men's blazer can be the perfect addition to your wedding attire. For more casual weddings, mix and match your light blue suit jacket with a range of different pants colors, such as tan, black, or light grey slacks.
As you begin to put together your wedding look, keep seasonality in mind. Light blue is a refreshing color that is an increasingly popular choice for weddings, especially for spring and summer events. Light blue blazers work great for wedding guests, while light blue suits are a wonderful choice for the groom, marrier, groomsmen, or other wedding party members, depending on the overall color theme and aesthetic.