I always learned “ROYGBIV” as the colors of the rainbow. Red, orange, yellow, blue, indigo, violet.
What’s up with the last two? Isn’t indigo basically just dark blue? Why is it violet and not purple? Can’t it just be “ROYGBP”?
I always learned “ROYGBIV” as the colors of the rainbow. Red, orange, yellow, blue, indigo, violet.
What’s up with the last two? Isn’t indigo basically just dark blue? Why is it violet and not purple? Can’t it just be “ROYGBP”?
All of what you have said is incorrect. I can’t fault you for forming a hypothesis on this though, colors are weird and can be difficult to understand, with the spectrum as one way to define, then RGB/CMYK being the way colors are calculated for screen/print, it can be confusing. When talking about a rainbow we are talking about the visible light spectrum.
Indigo is a shade in between blue and violet. There is no red in indigo, just as there is no red in green. There is also no red in violet.
“Purple” is just magenta; it is a mix of red and blue, it is not on the spectrum at all and is actually your eyes/visual cortex seeing both colors at the same time overlapping.