Could be for either but probably more for a boy. You could make another one just like it but use maybe more brights in yellows, pinks, orangles and greens for the girl. I made a couple of quilts for a set of twins, one girl and on boy and the only changes I made were the backings I used. The blocks also were arranged differently but that's just how they came out.
Love yours as it gives a lot of ideas for quilting in those white blocks. Love how the dark outer triangles frame the quilt.