A blue chambray dress shirt and khaki dress pants are absolute mainstays if you're piecing together a stylish closet that matches up to the highest sartorial standards. For a truly modern hi/low mix, introduce tobacco suede loafers to the equation. This look is most probably what you're looking for as an older guy.
Blue Chambray Dress Shirt with Tobacco Suede Loafers Dressy Outfits For Men After 50
One of the smartest ways to style out such an essential item as a blue chambray dress shirt is to pair it with charcoal dress pants. Tobacco suede loafers will bring a sense of stylish nonchalance to an otherwise mostly classic ensemble. This combo is most probably what you've been looking for as an over-50 gentleman.