This combo of a grey blazer and navy chinos looks classy, but in a fresh kind of way. With footwear, go for something on the smarter end of the spectrum by rocking brown leather derby shoes.
Grey Blazer with Brown Leather Derby Shoes Smart Casual Outfits
A grey blazer and charcoal jeans are the perfect base for an outfit. You could perhaps get a bit experimental in the footwear department and spruce up your look by rocking brown leather derby shoes.