Why not reach for a blue denim shirt and blue jeans? Both pieces are very functional and look good when paired together. When in doubt as to what to wear in the shoe department, stick to a pair of espadrilles.
Blue Denim Shirt with Espadrilles Casual Outfits For Men
This combo of a blue denim shirt and khaki chinos is definitive proof that a pared down off-duty outfit doesn't have to be boring. The whole look comes together quite nicely when you complete this outfit with espadrilles.