Diane Sawyer is one of the chicest dressers I know of. She bases her outfits around bold colors, but in a timeless, classy way.
The royal blue jacket is great for both color and figure, as the tie creates a waist. The blue stands out against the muted combo underneath.
The choice of a bright peach button-down with toned-down pants creates the same effect. If you are going to wear color – which you should – always counter one bold piece with more subtle colors…grey, white, or black.