I placed a paper towel on top of a shirt that I have. The whites were different, but the picture doesn’t show it very clearly. In person, the paper towel has a yellow tint while the shirt has a blue tint. As I notice these colors within the white, it was hard for me to go back and call this color “white” again.
Changing the lighting in the room didn’t make much of a difference. The only difference I saw was that the colors were more prominent. I still saw the yellow tint on the paper towel and the blue tint on the shirt.