My art teacher asked if I was colour blind so I tried a free test suggested by Google.
Looks like I have MILD DEUTAN
What is a Deutan?
Deutans are people with deuteranomaly, a type of red-green colour blindness in which the green cones do not detect enough green and are too sensitive to yellows, oranges, and reds.
As a result, greens, yellows, oranges, reds, and browns may appear similar, especially in low light. It can also be difficult to tell the difference between blues and purples, or pinks and greys.