Logically I understand that cyan is directly between green and blue, but my brain believes it's 100% blue.

BTW, cyan is very poorly represented by sRGB color space. I was delighted to see the real vibrant cyan of the Mediterranean sea.

funny thing is that I would have said cyan was blue going into this, but the outcome had me classifying the boundary at "more blue than 93% of the population" -- meaning that I classed cyan as green when asked, without even remotely questioning it.

Same for me, I classify it as blue.