For 10 points, name the primary color that is neither red nor yellow.
This color names an artistic collective founded by Kandinsky. The front portion of the Girl with a Pearl Earring's head covering is this color, which appears along with white, red, and yellow in Mondrian's Broadway Boogie Woogie. Gainsborough painted a young (*) boy dressed all in this color, and Picasso painted The Old Guitarist during a period named for this somber color. For 10 points, name the primary color that is neither red nor yellow.
This color names an artistic collective founded by Kandinsky.
blue (accept variations, such as light blue; accept Blue Rider or Der Blaue Reiter; accept Blue Boy; accept Blue Period)