Is drawing my room contained by 2 colours okay? Any suggestions? I would like to paint one wall surrounded by my room dark-but...

I would like to paint one wall surrounded by my room dark-but not so dark purple and the rest is feathery purple. Is it okay? My room size is average ...and not really bright..no natural sunlight as it's a middle room..my current room colour is pallid.
Answers:    yeah should be fine, you can do it with 3 colours if you want!
That soudns nice - as long as the poorly lit purple is not too daark..