Halogen is a favorite brand of mine and they never disappoint when it comes to getting the most out of a piece. Their chambray shirt finds a way to be dressy yet comfortable.
I love a good chambray button down, and I love how you can dress them up or down. For work, these button downs are perfect because they are silky material that dress them up a bit. I always add black pants or black jeans and it's polished yet comfortable.