Harmonies spatiales , by luigi guardigli , mosaic , Art Informel style , Tile, Line, Pattern
A blue and white tiled wall with a yellow stripe.
 a mosaic. It is made up of small tiles. The tiles are different shades of blue, white, black, and yellow. The yellow tiles are square and square. The white tiles are rectangular. The black tiles are diagonal. The blue tiles are arranged in a way that creates a wave.