Browns go beautifully with blue trousers, in particular if your pants are not a fine business worsted weave I have seen a sand/beige SC go very well with navy herringbone pants. Accent with tan/chestnut. The hate on this forum for navy pants primarily stems from the influence of 2 people:
and manton. And then you have all the johnny come latelys trying to prove their e-street cred to each other by trying to outdo each other in clothing fundamentalism.