And here is where we start to deviate: This version of periwinkle definitely contains more blue. I love its use here. Whenever you want to really envelop a space in a color, hit up the ceiling. Plus, this warm yellow shade is a great complement to the periwinkle.
Another atypical application is this stair in a condo where shutters line both sides. The mix of sliding and swing shutters serves to "modulate the public/private spectrum as well as to craft the amount of sunlight penetrating the upper and lower rooms," according to the architect.