***What color can I pair with Tiffany Blue for my wedding?***?

I know brown's not what you want, but it's along the right idea when it comes to colors: It's neutral. If you have a color as wonderful as Tiffany Blue, why distract from it by adding other colors? It's an accent color, meant to pop, not meant to compliment. Silver is ideal, especially if you aim for a modern yet timeless, cool, crisp look. If that's too understated, you can try other shades of blue or even the lime green as another person suggested.