"Fioletowa" sounds like it comes from "violet", only that the first letter became devoiced. Can this word refer to the colour "violet"?
if google images doesn't lie to me then yes. but the less blue variant On the other hand purpurowy is more red than purple
I meant #C71585= Purpura (lata 1930) Name and number from linked above wiki. Polish dictionary says it is dark red with a "fioletowy" hue.