Combining a white dress shirt with a light blue long sleeve shirt is an on-point choice for a casually refined look. For a more refined touch, complete this getup with dark brown leather loafers.
White Dress Shirt with Light Blue Long Sleeve Shirt Warm Weather Outfits For Men
Consider wearing a white dress shirt and a light blue long sleeve shirt to pull together a dressy, but not too dressy look. You could perhaps get a bit experimental on the shoe front and lift up this getup with tan leather brogues.