Hi
I am creating a poster with theme Prevention. What color depicts Prevention as red is for stop/danger, green is for go green, blue for water... what color depicts prevention.
Please let me know.
Thanks

What is the subject of your prevention poster? You will find a lot of posters of various kinds on the following link that might help you in choosing colors. If you add a word or words about the subject of your poster, then you should find even more results along the lines of whatever your subject is.

Prevention Poster - Google Image Search