Prussian blue was not widely used in mainland Japan until the 1830s, however, with a series of fan prints by [[Keisai Eisen]] from [[1829]] being perhaps the first to be printed entirely in Prussian blue (as ''[[ai-e]]'', or "blue pictures") without any other colors.<ref>"[http://shunga.honolulumuseum.org/2013/index.php?page=125&language=&maxImageHeight=470&headerTop=0&headerHeight=109&footerTop=579&bw=1366&sh=0&refreshed=refreshed#.VH1YvsmTLqM Tongue in Cheek: Erotic Art in 19th-Century Japan]," Honolulu Museum of Art, exhibition website, accessed 1 Dec 2014.</ref> Many of the most famous ''ukiyo-e'' images employing Prussian blue - such as Hokusai's "Great Wave," are from the 1830s. | Prussian blue was not widely used in mainland Japan until the 1830s, however, with a series of fan prints by [[Keisai Eisen]] from [[1829]] being perhaps the first to be printed entirely in Prussian blue (as ''[[ai-e]]'', or "blue pictures") without any other colors.<ref>"[http://shunga.honolulumuseum.org/2013/index.php?page=125&language=&maxImageHeight=470&headerTop=0&headerHeight=109&footerTop=579&bw=1366&sh=0&refreshed=refreshed#.VH1YvsmTLqM Tongue in Cheek: Erotic Art in 19th-Century Japan]," Honolulu Museum of Art, exhibition website, accessed 1 Dec 2014.</ref> Many of the most famous ''ukiyo-e'' images employing Prussian blue - such as Hokusai's "Great Wave," are from the 1830s. |