G for 2 of the blocks and H for the third. Red Heart for the white
Q&A with Ankhara
That looks great! Love the colors. Did you take any color theory classes by chance? :)
I would say some color theory was taught in the art classes I took in the past. I have taken drawing, painting and a design class. My photos and/or lighting make the work look dull, but I like vivid colors or contrasts.