Take a scrap piece to test. The color tint you are looking for will be between yellow ochre and brown ochre. You will need to temper a tiny bit of diluted black. However your eye will be final determiner. Remember, the woods react differently to finishes, so once you are in the zone of the color you want you will need to toy with the finish to make sure the blend from Hickory to Maple is a smooth transition. This is a tricky thing, you are dealing with many variables. Not necessarily hard but tricky.
Graywolf, has a class in this and is he is an excellent teacher. When he does the next one consider taking it, all benefit regardless of skill level.
Here is one approach used by refinishers when matching fixes, would be the same for this -
If you wanted to get tricky, mask the hickory then stain it to match the hickory, after staining the maple , remove the masking let it dry, then mask off the maple add your finish to the hickory, then remove the masking from the maple, then sand the transition joint 1-2 inches in , then tint the final finish for the maple, then mask the hickory add the finish to the maple, then remove the masking, then sand the entire top with 600 lightly, then add the final finish.
Richard may have an easier way,