I definetely agree with what Tobias is saying. I would also add a pink or a lilac tie as these colors complement blue and white shirts very well, especially if worn with a charcoal grey suit. I would also consider looking into Hermes or Ferragamo style repeating animal prints ties as those are usually quite whimsical but bring alot of flair to your outfit. They have some beautiful repeating animal prints with dolphins, fish, crabs etc. Thomas Pink also has a really good animal prints selection. Sometimes these labels also carry repeating sporting goods prints like golfballs, tennis raquets, which are really aesthetic.
Another thing I would watch out for (unless you are quite wide in your shoulders) is to look for ties that are between 3.25 to 3.5 inches in width. Some labels still carry 3.75 inch to 4 inch ties, but with suits today generally being made with narrower lapels, it would look more in sync to wear a slightly narrower tie. Hope this helps.
Thanks for the reply, Tobias and RCAsia.
I'm a bit skeptical to wearing anything pink really. Pink shirts, if light pink, can work though.
Yes, I've been wondering about what length to go for, but I'll try to keep it in the 3.25 to 3.5 inch-range. :)