Blue + Yellow = ?

 

My color research continues. Now I am working on mixing greens with blues and yellows. From our experiences, we all know blue mixed with yellow producing green, but on the computer color wheel, blue and yellow are complementary. It has been shown that mixing blue and yellow lights produces white light (additive), and overlapping blue and yellow transparencies, or mix blue and yellow ink, produces black (subtractive). So I mixed blue and yellow oil paints (manganese blue hue and cadmium yellow deep) as an experiment, and tracked the mixing path on the color wheel. I have seen that the mixing path does not go straight, but follows a curved path going through the green zone. This is why blue and yellow mix green. The curved mixing path is so important, but most artists do not know this including myself until this experiment. I have searched online to see if there is any theoretical explanations. I have found something called "Kubelka - Munk" equation. The K - M equation also explains the tinting induced color shift as I experienced earlier as well. If anyone have played with the K - M equation, please let me know. I want to learn more.