Groom attire for beach wedding

I like the tan if you want a light and bright look, but navy will appear more formal. Both could definitely work. If you want a more formal look and are having a late afternoon/evening event, I think navy would be most appropriate. If you are going for a more casual look or having a daytime ceremony, then I would lean towards tan.

You might also want to consider your FH's style, build, and complexion. My hubby is a bigger guy and I feel like a tan suit wouldn't be as flattering on him as a darker color. Tan might also be less flattering if your FH's skin tone is a very similar color.