Inart Ultramarine Blue Acrylic Paint 500ml (140299046) has a buttery consistency that provides good coverage in one or two coats on canvas, paper, cardboard, or wood. It dries quickly and has a satin finish after drying. It can be diluted with water for more transparent, watercolor-like effects, or applied directly for greater opacity and color definition. It can also be mixed with other colors in the Inart range to obtain intermediate shades. With a larger bottle than the 75ml version of the same line, this deep, slightly purplish blue is one of the most popular colors for night skies, cool shadows, and purple blends, and is a classic reference in painting since its original natural pigments. It is suitable for artists who regularly work with this intense blue and need to replenish paint less frequently than the smaller bottle would allow.