How do i highlight a cell to be red/green based on the 2 date columns I have?

I have about 10 columns of different Plan and Actual due dates . I am trying to get the the Actual Column date to highlight in green when it is before or equivalent to the Planned date. How do I do this? in the conditional formatting i'm limited based on the calendar, when it's actually based on the input for the planned date. Example below