Wedding Attire

Tan suits may provide a nice contrast. Gray could be nice and would go well if they have ties to match the bridesmaid colors. But it is good to have the groom stand out differently from the groomsmen. Check out some of the examples on this website too.

Gray suits would look nice, or classic black tuxes. Give them blue ties and vests to match your girls. If you want the groom to look distinct, he can have ivory instead of blue. (My fiancé matches the guys but has a fancier boutonnière.)

I'd go with gray or black. Ties, vests etc. don't have to match the dresses and groom doesn't have to dress to stand out, just for the formality of the event.

Navy could be really nice with royal blue for a monochromatic look (plus it's super easy to find appropriate attire in navy)

You could also consider emerald green if you want a little bit more color