Only way to know is try it and see if you have any objection.
The variable are: Speaker matching, room acoustic, your ears.
In a perfect world, the speakers are matched perfectly, meaning they are the same "set" from the same vendor, but plenty of people use unmatched speakers.
My current center is "too bright" against my L+R but due to financial consideration and the fact that the "proper" center will require that I modify my entertainment cabinet, I have decided to live with imperfection.