Munker-White Illusion mental8-6p.html

The proof of equal luminance ( same color intensity) in Munker-White Illusion and Bezold effect.
The black bars are removed with the Photoshop Elements' Magic Wand tool.

Munker-White Illusion   White's Illusion  
Munker-White Illusion   White's Illusion  

Bezold effect  

Bezold effect