The blue case does match up pretty good.
Whatever you do, DO NOT get the clear case. I bought one of those also thinking that you could see right through it and get the color of the Pearl Blue Phone (since it is clear). Wrong. It is not clear but rather "cloudy". You do not see the underlying color at all. The Blue case (which is actually kind of blueish, purpleish, blackish color) matches the Pearl Blue of the phone quite nice.