Plum? Purple? Pravana?

For dark colours, I don't think there is an ideal base as such. Just an adjusting of the mix of colours you use. For this one, a darker base would actually be a plus to give you some real depth of colour. On very light hair this will lack some of the richness of this.

So basically, I'd just remove colour enough so it's a ginger. I don't know those pravana colours well, so I don't know what mix you'd have to use really. You might need to adjust to allow for a gingery base though.

Thank you. I may try a Vit C wash first and see if that works, the colour remover took it to more of a strawberry blonde.

It's not worth taking it lighter. Work with what you have and strawberry blonde is absolutely fine (almost too light as I was trying to explain before). Every fading session you do is going to add damage, so it's not worth it if it's going to make next to no difference in the end result. You don't need it lighter, you just need to adjust the colours you're using.

Can you post a photo when you've done the colour remover?

I will post after fading, to hopefully get some further input.

In regards to the vit c, I was going to try that rather than the colour remover, in the hope it wouldn't lift as light as the strand test of colour remover had. If that makes sense.