Triad with split complements is a wonderfully flexible color scheme, especially when you expand the definition a bit.
Playing The Color Scheme Game I threw an eleven (Triad with Split Complements) and an eight (Dominant Color is red/violet, split complements are green and yellow). For a more dynamic layering of color shapes I extended the dominant color of red/violet to include a cooler violet. For me, triad schemes provide more opportunities to create strong color interactions and visual movement than analogous color schemes. I prefer analogous schemes for meditative, soothing imagery.
Ink and Watercolor Sketch: drawn first with fountain pen filled with black ink followed by watercolor.