do i wash a white sweater with blue stripes with the whites?

You could safely wash it in either group so long as you are using non-chlorine bleach (like Clorox 2). But, if you use chlorine bleach with your whites, then I would not wash this sweater with the whites.

Yes.

Blue And White Sweater

Wash it alone first to avoid any accidental bleeding. After that it's save to wash with your whites.

lights load i wouldnt risk putting it in with whites

I think it'll be safe to wash it with your whites but really you can wash it with your colors to. i don't think the colors will run. i wash my whites and colors together all the time