There are so many patterns to choose from that uses three fabrics. I did a Double Irish chain in blues and a nice creamy white print that was pretty. Also, there is Jacob's ladder that would look nice in blue. My favorite is the Drunkard path. there are about 80 variations of this pattern and all are beautiful. Just takes 2 colors and if you wanted a third, you could use it in a border or blocks inbetween.