What are some good color combination?

I'm making an electronic poster in Photoshop for a school project and one of the criteria is color harmony. It should be eye-catching and looks interesting but not in a too bright rainbow ima puke way.|||I find that green (not fluro, but lighter than forest green), orange and purple look good together. Purple and yellow(subdued yellow) look nice together too. If you want something eye catching, try the first option.