The color purple is associated with a lot of meanings. Hence to come up with a poster out of it, you need to be very precise. Otherwise, meanings might conflict. For instance, it is linked with loyalty, sophistication, wealth, magic, mystery, luxury and spiritual fulfillment among other factors. As you can tell, purple is very diverse. It can be used in most of the major aspects of life, and fit in perfectly. More so, it comes as framed art or canvas print. Since it is believed that surrounding one self with purple makes one feel peaceful; the same impact can be made by use of a poster. The trick is to have many of them in different places. Do well to bear in mind that an art print contributes to the final outcome in a big way.
You can get an idea for choosing a poster with purple color by having a look of those things which come in this color. In the same way, you will get information regarding this color and its meanings. Given the ideas, you are in a position to select the theme of your poster.
You can either choose a magical poster, a luxurious or even a spiritual one. Purple has a lot to offer. An art print is not affected by the theme in any way, so you should not consider it as a hindrance. Try out the poster that pleases you in the purple world.