Figure 1.
Paintings by Pierre-Auguste Renoir (1841–1919) from a narrow period of time of his artistry show a high consistency of the specific usage of the colour blue. From left to right: (a) Sleeping Girl (1880), (b) Venezia, the Doge's Palace (1881), (c) Bay of Naples, Evening (1881), (d) Child with a Bird (1882). Photographs made by CCC.