This is not a good description of a character: Bob was 6'3, muscular, and with blonde hair and blue eyes.
Why? Because it sounds like a APB from a manhunt, not like a character description. It doesn't mean anything. It won't help your readers see your character any better.
While hair and eye color can be useful, giving specific numbers about height is ALWAYS meaningless. A better way to show that a person is tall or short is to have them interact with their environment. Maybe they have a hard time reaching the top shelf at the store or maybe they always bump their head on low ceilings or always have to stoop down low.
Y'know? ;)
