To see how a colorblind person sees you just gotta get a color wheel and squash it vertically for red-green colorblindness (which is probably the one your bf has) and horizontally for yellow-blue-purple colorblindness (which is the one i have) As you squash the color wheel, some colors fuse and some don't; Red-green deficient people can see blue and yellow clearly, but all the other colors tend to look more blue or yellow-ish so that's why they confuse them; In the other hand, blue-yellow deficient people can see red and a teal-ish green perfectly, but all the other colors may seem more red or more teal-ish. There are also colors that colorblind people cannot see because they fuse with white when the color wheel gets squashed in the middle, for example: Red-green deficient people cannot see pink, they might see it as a blue-ish grey Blue-yellow deficient people cannot see yellow, it looks really washed out to me Purple is also a very interesting color, because red-green deficient people see it as blue while blue-yellow deficient people see it as a brown-greyish color, so no color blind person sees purple the same, or at all. Red-green deficient people also confuse reds and greens because they look like the same shade of yellow-ish brown, so thats why hey might confuse both of them with brown. And us blue-yellow deficient people confuse blues and greens, because 90% of them look like the same shade of blue. That's all the basics of colorblindness hope it helped

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