Casual
doesn't mean sloppy. Business casual must still be polished and professional.
Basic business casual looks like a polo shirt/khaki pant combo are appropriate
in many corporations. Most resources agree that for an even dressier
casual look, you'll need to add the sport coat for polish.
When choosing colors, you can go for: Contrast (complimentary, but different):
Coral top with sand pant Tonal (different hues in the same color family):
Sage top with olive pants.
Casual
shoes should be kept in the same tip-top shape as their dressier counterparts.
Styles range from penny loafers to lace-ups, leaving lots for comfort
and budget preferences. Some companies make it easy by separating their
corporate casual items from the dress line. And even if your duds are
straight laced, you can spice it up by trying edgier shoes like the
monk strap.
Belts
and socks should always compliment the outfit. The type and color of
socks (no white athletics) and belt will take its cue from the outfit.
Some Don'ts: