ROYGBIV Share definition Flag A way to remember the colours of the rainbow. Red, Orange, Yellow, Green, Bue, Indigo and Violet. Person 1: I can't remember the colours of the rainbow, Person 2: Try ROYGBIV ROYGBIV by kal torak May 5, 2019 0 0 Get merch Get the ROYGBIV mug. Buy Now — $32.95 See more merch