Take a look at this image, You see embedded spirals of green, pinkish-orange, and blue? Incredibly, the green and the blue spirals are the same color.
The reason they look different colors is because our brain judges the color of an object by comparing it to surrounding colors. In this case, the stripes are not continuous as they appear at first glance. The orange stripes don’t go through the “blue” spiral, and the magenta ones don’t go through the “green” one. Here’s a zoom to make this more clear:

The orange stripes go through the “green” spiral but not the “blue” one. So without us even knowing it, our brains compare that spiral to the orange stripes, forcing it to think the spiral is green. The magenta stripes make the other part of the spiral look blue, even though they are exactly the same color. Source: i found this here. and they found got it from here

This is a picture taken directly above these camels in the desert at sunset. It is considered one of the best pictures of the year. Look closely, the camels are the little white lines in the picture.The black you see are just the shadows.

Photo taken by George Steinmetz (2005)
National Geographic Society