Cats are not completely colorblind, but their color vision is limited compared to humans. They can see colors, mainly in muted tones of blues, yellows, greens, and greys, but they do not perceive reds and greens the same way humans do. This color perception is somewhat similar to how a red-green colorblind person might see. Cats have fewer cone cells in their eyes than humans, which limits their range of color vision, but they have more rod cells that help them see better in low light and detect motion more accurately. Overall, cats see the world in a more muted color palette compared to humans who have trichromatic vision with a broader spectrum of color perception.