There are no rules on how many colors you should and shouldn’t use as your palette, but there is a bit of magic to keep it simple. Start with two main colors.
As a wedding planner, I'm constantly taking into consideration our transitioning seasons. Most of my brides and grooms are planning at least 6-9 months in advance. This means we're planning in May what we'll see in fall or winter. As a result, it keeps me contemplating the need to make the appropriate choices for my clients and lead them down the right path.