“Ultimately, our brains judge color and brightness in context. In other words, our brains compare the surrounding environment in order to create our perception.”
Example: These two greens. Are they really different colors?
“The purpose of our senses or eyes in this case is not to provide us with an absolute color or physical property of our external reality, but to interpret what we see as efficiently as possible in order to interact with the environment most appropriately.”
To summarize: “Our perception is relative.”
Watch more videos with optical illusions in the archives.
Related exploration: The Munker-White illusion.