For something on the classic and casual end, consider this combo of a white blazer and a white and navy gingham dress shirt. If you feel like stepping it up, complete this outfit with black suede tassel loafers.
White and Navy Gingham Dress Shirt with White Blazer Outfits For Men
This pairing of a white blazer and a white and navy gingham dress shirt strikes the ideal balance between dressy and casual. If you need to easily level up your ensemble with shoes, introduce a pair of brown suede derby shoes to the mix.