I tried a new hair color Clairol Nice and Easy 114 natural light ash brown,instead of my normal light golden brown.
It turned most of my hair black,especially the bottom and ends.I only left it in for 10 minutes.
How do I get the black out?

Unfortuately, the only ways it to either strip the color out or bleach it, which I wouldn't bleach it. Too much damage involved.

Try going to a beauty supply store and getting a stripper. I would use Eliminate. It will strip the color out. Then if I were you, I would use a reconstrutor to repair your hair. You can use Biolage deep conditioning treatment or K-pak.

Good luck.