I have trouble making out the numbers for the red/green, but it is not too bad. Not sure if it is a 7 or a 2 for example. My husband who is not color blind often disagrees with me as far as what color things are so aware that I have a slight problem. My son is color blind so know that I am a carrier. The advantage to being color blind for men is that can see movement or patterns better and is an advantage when it comes to hunting. I can pick out a deer in the woods rather well because it helps me to see patterns. I often ask my husband for input on matching colors for a quilt and sometimes take his input. When I don't take his advise, he and other quilters tell me that I combine colors that they would not.