A light gray would look great. It needs to be just dark enough to give you some contrast with your white trim, but be significantly lighter than your roof so you keep the contrast. You'll have to look at samples in your light, outdoors. Colors will look completely different outside than they do inside, and you can't base it off other people's photos either. Start with a paint color app so you can try out virtual colors before you get the samples. You might also consider a very light green.

Thanks. I have been noting a couple lighter (BM convington gray, BM silverplate, SW Repose gray).

I like both Gray Owl and Revere Pewter. Even though Revere Pewter has a low LRV, it is a very light color and it has a brown undertone that I think will look good with your roof. I used as a trim color in my house for the bedrooms and the hallway instead of white. With a darker color as a contrast it felt like an off white. With a lighter blue, I can see the brown.

Thanks for suggestions. I have gray owl (used in a bathroom) and plan to paint on a large sample board. I have seen exterior pics online that look nice with a slight green undertone. But one home looked light blue.

Here is a close up of our shingles

The closeup of the shingles isn't as important as the overall effect from a distance. It seems to have a lot of warmth for a gray. Revere Pewter might work.

would you please post a pic of the result?

I too am considering gray after many many yellow years

We used Benjamin Moore “Light Pewter” #1464. Posting a closeup during painting where you can see light pewter is gray compared to our old house color. Once fully painted, it is subtle gray.

My pics didn’t make it, trying again.

Your house is beautiful!

Looks classic, clean and crisp

Thank you for sharing pictures of paint

So hard for me going from a sunny yellow to classic grey, your house has pushed me to just do it