I need a Socolor that will give a very slight lift to dark brown/black natural hair with 10% grey?

I have 10-15% grey and need a SoColor that will cover well and slightly lift my hair color WITHOUT ANY WARM TONES. I would like to go to an ash brown

I need a Socolor that will give a very slight lift to dark brown/black natural hair with 10% grey?

I have the same situation. Stay with the browns because they cover well. Im thinking about doing the same thing.