Venn Matrix

With four variables, a venn diagram can take the form of a 4x4 matrix. This is actually not intuitive even though it seems like it, but it's quite useful since every case ends up equal area - and while 2 or 3 part venns are common, four can start getting weird. It's also graphically interesting - I had a lot of fun with color theory thinking about this in the HSB space. This one is a complementary / complementary adjacent scheme. Brightness and saturation are influenced by multiplied overlap, while hues are influenced by averaging values.