This is a single pigment, opaque rich blue with green undertones. Its name derives from the Latin caeruleum meaning sky-blue pigment and was originally made in the 19th century by mixing cobalt blue with tin oxide. It is essentially a tint of cobalt blue. Unlock your potential with thick, high viscosity, pigment-rich professional acrylic color. Formulated with a high concentration of lightfast artist-quality pigment and a satin finish, Heavy Body Acrylic gives you permanent color with crisp brush strokes and bold knife marks. Never too slippery, or too sticky, take your creativity to new peaks with satisfyingly rich color, perfect for impasto, blending and all kinds of pro painting techniques.