We installed a brick patio, and splatter from wet-cutting the bricks ended up on the installed bricks.
How do I clean it?
Use a pressure washer with the widest angle nozzle held about 2 ft or more away from the pavers will take off the residue. Don't get too close or the intense water pressure will also take away the smooth finish of the pavers..
Muriatic acid will literally eat away concrete. I use when repointing bricks. It may discolor the pavers so you will need to test it first.