I am waiting for that answer, too. I don't know this but I think you can still perceive a color CHANGE regardless of the hue.
Red-green color blindness
The most common type of color blindness makes it hard to tell the difference between red and green.
There are 4 types of red-green color blindness:
- Deuteranomaly is the most common type of red-green color blindness. It makes green look more red. This type is mild and doesn’t usually get in the way of normal activities.
- Protanomaly makes red look more green and less bright. This type is mild and usually doesn’t get in the way of normal activities.
- Protanopia and deuteranopia both make you unable to tell the difference between red and green at all.
Blue-yellow color blindness
This less-common type of color blindness makes it hard to tell the difference between blue and green, and between yellow and red.
There are 2 types of blue-yellow color blindness:
- Tritanomaly makes it hard to tell the difference between blue and green, and between yellow and red.
- Tritanopia makes you unable to tell the difference between blue and green, purple and red, and yellow and pink. It also makes colors look less bright.