Violet and indigo are often used interchangeably in color work.  A softer member of the spectrum, Violet has the same ruling planets and basic connotations as Blue.  However, there are a few dissimilarities that are worth pointing out specifically. 
 
candle_violet_If you have lost something and are looking for “locating” energy, violet is the perfect color candle to burn .  Said to help in the finding of items (material) lost, violet is often invoked for locating things like rings, a book, a treasured photograph, etc. 
 
Violet helps to bring about understanding on a cosmic/karmic level.  It also helps when trying to maintain balance, perform divination rituals, or seek advancement or progress.