Chromatic Dungeon Illusion
After Akiyoshi Kitaoka
Simultaneous Contrast Effect
The following two images are published here: https://1000wordphilosophy.com/2023/10/26/philosophy-of-color/?fbclid=IwAR0uUidY8eofRFQVBy7DlowEM-AXwUckrfeI2cW-ZZSMcfKirSb0JSoE25U
After Akiyoshi Kitaoka. This figure is published here.
The Illusions Index by the Center for the Study of Perceptual Experience at the University of Glasgow
Akiyoshi Kitaoka's Illusions Pages
Amos Storkey's Vsaiul Isulloins page
Michael Bach's 148 Optical Illusions & Visual Phenomena
Op Art (Tate)
Apparently even just looking at pictures of "green spaces" might help you recover from stress.
Try it out!