Grumbacher Pre-tested Professional Oil Paint, Indigo, is made with pure pigments milled in alkali-refined linseed oil. Indigo is a blue black color with a purple bias. This historic color was a popular commodity in ancient times. Used mostly for underpainting due to its slightly fugitive nature, Indigo is made from synthetic indigo pigment. Formulated from Synthetic Indigo (PB 66).
Available in a 37 ml. tube.
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