Acrylic Monoprints mounted on 4- 6x6 stretched canvases.
Indigo is a hard pigment to find in Acrylic paint in my area. I've only ever found it by Pebeo. So I have to mix my indigo. On every tube of paint, it should list the pigments used to mix the colour. This tube of paint used Phthalo Green and Dioxazine Violet to create Indigo. So that is how I mix most of my indigo. You can also mix Ultramarine Blue with Carbon Black for a decent indigo. Or Phthalo Blue will also work with Carbon Black if it is all you've got.