Prussian blue 

"Prussian Blue" is an abstract artwork created by Kazuo Shiraga, a prominent Japanese Gutai artist. The artwork features a bold composition of dark and light blue hues, with the artist's signature style of dynamic, gestural strokes. The work is characterized by a sense of energy and movement, likely created through the spontaneous application of paint. The use of Prussian blue pigment adds a vibrant and powerful presence to the piece, characteristic of Shiraga's artistic expression.