To start with, you need wood hangers. I bought my very inexpensively at Ikea but I also see wood hangers frequently for sale at my local thrift stores.
If your hangers have any protective finish on them, it only takes a few minutes to lightly sand it off with fine grain sandpaper.
Prepare your dye bath. I used Aquamarine liquid dye (about 1/2 a bottle) in my kitchen sink- with hot water.
Drop your hangers in...
... let them soak until you achieve your desired color. If they're not soaking in the dye, try rinsing them and sanding a bit more.
I let my hangers soak about 1/2 an hour until they absorbed the color. When I removed them from the sink, I let them dry and then I scrubbed them over with a paper towel to remove any excess dye.
An optional step is to dip into your craft stash and add a few fun embellishments to your hangers with hot glue. I used vintage buttons that match our decor.
And now you're ready to put your cute new hangers to use. I liked mine so much, they're a focal point in our guest bathroom!