In saying that I find soft pink and white work just as well as blue for the shirt. And if the shirt and coat are fairly plain a brighter or more pattern tie works. Same goes for working a more detailed shirt.
Basically, the easiest way to make up an outfit is to keep 2 out of the 3 main elements (shirt, coat, tie) pretty plain (solid or very faint pattern like pencil stripe on shirt or small motif on tie) and then the 3rd can be a little more adventurous/bright etc. Then add a pocket square (a must for me, even if only white linen).
Alternatively lose the tie when wearing brighter or bolder shirts.