They’re vivid, but not so vivid that you feel super unnatural wearing them. Especial for the brown/hazel eyes, it will look nice because the design has a ring of brown in the center which allows the lenses to blend with natural eye color. Since the lenses aren’t super opaque, they don’t cover your natural eye color completely, which allows them to be more natural than they would be if they were opaque. Where the lens is no longer on your eye’s iris it’s evidently a much brighter blue, so if you have light eyes these would definitely pop more than they did. These are indeed a little bit larger than the natural iris, so the effect is cool because there’s a slight ring of bright blue between the iris and the limbal ring.