>I asked myself how many people already see the whole world like this by default.

>...

>As a designer, I depend heavily on color...

I'm a little surprised that a visual designer wouldn't already be applying basic accessible design practices - but I guess it's not something most people think about day-to-day. Still, at the very least, consider running your palettes through a simulator such as:

http://www.color-blindness.com/coblis-color-blindness-simula...