Royal Blue Underglaze produces a deep navy blue, and is a good choice as a base for nighttime scenes.
Coyote Underglazes are the only commercially available underglazes specially designed to be fired at cone 5-6. The colors can be mixed, and stay true and stable up to cone 10 in oxidation. They are bold and striking, and well-suited to functional ware when covered in Coyote Gloss Clear and fired to cone 6. They can be used on either greenware or bisque.