Every time someone finds out I’m color blind, I’m always hit with the same question: “So, what color is this?” 95% of the time I’ll answer correctly, which is always followed by, “Wait, so if you can tell this is {insert color}, then how are you color blind? What do you see?”.
http://rgd-accessibledesign.com/2015/09/designing-for-and-with-color-blindness/