Hair has turned purple

[danibeauty]

So I had blonde hair i usually use wella 12/1.
Today I tried to ombre my hair and the dark blonde at the top is lovely but I decided to lighten the bottom- stupid idea. I put on platinum and now it's a horrible grey/purple colour.
Please help how do I get rid of this? I want that to all go a nice warm blonde colour

 

[Lauren121]

Try s clarifying shampoo on the blonde should pull the tone out