It will cover, both those brands have very pigmented purples. It will come out quite dark over that base. Which Adore purple do you have?
African violet, I dont want it massively bright but then not to dark either!
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That is very blue toned, the Pravana is more balanced blue to pink. I think you will want to dilute it a bit to avoid it looking too dark. I think you will get a nicer result from the Pravana Violet on its own.