The hair and clothes in the left image appear to be white whereas those in the right image to be black, though they are the same luminance. This phenomenon is called “lightness constancy”. pic.twitter.com/wOmlEzPoxQ
— Akiyoshi Kitaoka (@AkiyoshiKitaoka) June 1, 2018
Believe it or not, the hair and the clothes in the two images are exactly the same shade of gray. Primarily, only the backgrounds are different, and that makes the foregrounds appear different in your own brain. The skin coloring is a little different, too; but I’m not sure why. It doesn’t seem significant.
The point is that you should always be skeptical, even of what you see with your own eyes.