What hair colour to dye in a cool shade?

I want to dye my hair. What would look best, I am in the cool shade colours. Naturally brown hair, dark brown eyes and olive skin shade. Do you know what colour would look best? What hair colour to dye in a cool shade?
If you are in the 'cool' family just avoid red and orange shades/tones. Ash browns or ash blondes look best with cool people. Have a consultation with your hairdresser about choosing the right colour as they are trained in this and will take a good look at all your colouring. Good luck!What hair colour to dye in a cool shade?
Very dark purple, many black highlights.. ON THE BOTTOM LAYERS ONLY! =) it would look very cute.
some black and a lighter borwn hilight. just to give hair a twist without overdoing it