For a casual look, make a light blue cardigan and navy chinos your outfit choice — these two pieces go pretty good together. Take an otherwise traditional look a more relaxed path with athletic shoes.
Light Blue Cardigan with Athletic Shoes Outfits For Men
When the situation allows a casual look, you can easily wear a light blue cardigan and grey chinos. Finishing with athletic shoes is an easy way to introduce a carefree touch to your outfit.