Personally, I think the blue (a cool color) would benefit from a pink (warm color) to create contrast and some visual warmth in the quilt. I would use the black as sashing, backing and binding. I think the black could be paired with a warm color such as pink in equal amounts and come out just fine. I do not think the black pairs well in equal amounts with the blue -- too cold.
I would probably also strive for more difference in scale between whatever 2 major fabrics you use. The pattern and scale on these is similar.