Nerve cells within the eye make it possible for cats to process different colours. Various differences in the nerve cells that relate to sensitivity send signals to the brain to interpret the different wavelengths being received. Cats will be able to see different mixes of reds, blues and greens. However, cats are unable to view the entire colour spectrum that has otherwise been the norm for humans.
The nerve cells contain different structures and are highly adjusted to low light conditions and fast moving objects making it easy to see objects that are moving at higher speeds or low lit places. While it may be a surprise that cats don’t see the same colours as humans, the colours aren’t simply relegated to an indiscernible shade. Cats see something a little different to the reference colours that we have defined due to their sight being less adjusted to slight changes in brightness and hues.