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Color Optical Illusions
A combination of color, our perception and the structure of our eyes can result in some interesting optical illusions. Here are some examples.
Stare at the red dot.
When the screen goes white, most people will see an after image of the US flag. When we stare at a bright object for some time, there is a fatigue of the retinal process. Because of this fatigue, when the image disappears, we see the complimentary color. The complimentary color may linger for some time until the retinal process dies out.
Color Perception Optical Illusion
How many colors are there in this picture, not including white?
If you answered two, you're correct. A close inspection will show that the "new" colors in the middle are actually not new. They are perceived to be different because the two colors are placed next to each other.
The darker colors that seem to appear are caused by a dithering effect. Dithering occurs when colors are so close together that your eye mixes them to create a new color.
Color Dot Optical Illusion
Which circle is largest? Which is smallest?
All of the color dots are the same size. Color sensation is due to changes in the frequency of light that is detected by our eyes. Here's a link to a site discussing information about color, and it's potential to affect health.
Flag Color Optical Illusion
What is the difference between the two shades of green?
There is no difference. It is the same shade of green. If you don't believe it, cover up the other colors and you'll see that they are the same.
Our perception of color is affected by the contrast with the nearby colors. Here the other colors strongly affect the green to make it appear different.
Color Reading Optical Illusion
Read through this list of colors.
But instead of reading the word,
If you enjoyed these illusions, you may want to visit our site with 140+ optical illusions utilizing many other types of illusions besides color.
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