if you dont want to dye your hair, just wash your hair regularly and it will eventually come off, but the fastest results woould be by dying it to the color you want.
There is only one way to get orange color out of hair. The only way to get orange out of hair would be dye it a dark color.
orange
orange
Orange
You can bleach it or strip it then re-color. Striping will not take you back to your natural color. It only removes the color you put on but leaves the under tone, like orange or yellow. Bleach can leave your hair orange or yellow also depending on the level of color you put on and the level of color you are trying to achieve. Both can dry your hair and damage it. Depending on the color you have on, you can try a clarifying shampoo to help it fade but only use it once or twice a week as it will dry out your hair.
Believe it or not, use a platinum color. The platinum is blue, and in the color wheel, blue and orange will become neutral. If you can get it, use a "drabber" to put under the platinum color so that it will "take" evenly.
Pippi Longstocking's hair color is orange
Yes, a medium ash brown hair color should cover a previous orange color. Since blue neutralizes orange, it's best to use a color that has a blue base.
reddish-orange
orange pink and purple
brown
red