Can I dye dark brown hair to light ash brown color

Alrighty, so I died my hair a dark brown, and it kind of came out black. So I would like to go back to a lighter brown but still dark. Can I do that today? I have a business thing tomorrow and would rather I did not have this hair colour?? HELP!! :confused:

Hey! My hair color is dark blond or a really light brown.. I-m not sure and I want to dye it dark brown? Is it safe? Or will I be getting a reddish color after a few washes? My natural hair is light brown but I dyed it.. a medium chocolate the stylist said but it really turned out to be a blondish...

Here is my dilemma, please help!! I wanted to do a hair color change, so I had my hair 2 toned. I told her I wanted to be dark on the bottom and blond on top so she did half the bottom dark brown and mixed sandy blond with another color for the top and it came out very brassy/red did not look...

My hair is naturally medium brown and when out in the sun it turns blond. I had bleached highlights in my hair and recently decided to go back to my natural color. My roots are very dark brown so my stylist (5 months ago) used shades eq by redken and dyed my hair DARK brown and it has mahogony...