Color options for the guys

If your bridesmaids are wearinf gray, the groomsmen can wear black suits with red dress shirt and tie. It will be a compromise the guys will like. Another alternative are the navy suits if they're good with the choice.

We are having navy tuxedos for our wedding, it will look really nice with the grey and they can still have grey ties or vests if youd like!

I'm a September bride as well! My girls will be in burgundy, fiance has an indigo blue suit and were thinking the guys will be in light grey. I've seen a lot of burgundy coloured suits in stores and you definitely couldn't go wrong with blue!

I am also getting married in September and we are doing dark blue suits for the guys as well, like others have said they look awesome ! And you can still add your grey colours in their ties/vests/pocket squares , whatever they are going with .. Maybe have each groomsmen wear a tie a shade of grey that matches the bridesmaid their walking with ?

I'm sort of in the same boat!

I originally wanted my girls in yellow (like a really really soft yellow) and the guys in dark/charcoal grey.

When I went Bridesmaid dress shopping, I realized yellow did NOT look good on them so they are now in a really pale silvery grey. I worried about everything being monochromatic, but really, the grey outfits can be jazzed up with yellow ties and pocket squares, yellow shoes and yellow in the bouquets.

Don't be afraid to do all different shades!

Navy all the way! It’s so in right now, looks so clean and classy. I’m going with navy for my guys!

If you want to look through some inspo pics, this real wedding and this real wedding used grey dresses with grey suits, and this one and this one used grey dresses with navy suits, and I think they all look awesome!

Navy blue for the guys! I think it looks sharp! A friend of mine is getting married in Sept with the girls in a grey colour and guys in the navy!

If the guys can pull it off burgundy would look amazing and sharp next to the grey, and it’s perfect for a fall wedding. Otherwise classic black would look great too

Black could work or navy. Grey is neutral so you really can't mismatch.

I just quickly googled some pictures, and light grey bridesmaid dresses and dark grey suits photograph very nicely together.

Just google search images for dress/suit colours and you'll be able to see them together.