You might take a look at Benjamin Moore Chantilly lace and see if that will work for you. Its a nice white. Or take a look at SW Extra white, at least for the trim. It should come close to your new white windows.

If you post a picture of the front of your house some commenters will photoshop different options for you. The BM and SW websites also let you try colors on a picture you upload. If you're into Modern Farmhouse you would do black trim and white body. I don't know how black trim would look with white vinyl windows, however. Usually the MF look is done with black windows. Let the commenters know what style you're hoping to achieve when you post a picture.

Are you referring to trim around the windows? Do you still have original wide solid wood trim? Just match the white of the vinyl - if you can take a sash to the paint shop that will help them get you as close a match as possible. Whites are all maddeningly different - hard for us to recommend anything. Keeping trim same as window sash helps the new vinyl blend in and be less noticeable... Then get a slightly darker, richer white for the walls (if that's what you want)

Are you painting the exterior or the interior? Or are asking about both?

I’m with Debbie downer (cute name) match the vinyl for all the trim, then the body can be anything from a slightly off white to a color. Post photos when you can.