Moving from indoor to outdoors

k i have 3 nice plants going and i want to move them out side would they be ok to just move and replant them into the ground out side i need to no asap cause i am doing this today real soon

They need to be put outside in filtered light for a few days and brought back inside at night and then outside days to get them hardened off.

would it kill it if they where just put out there and planted