Since 1837, Tiffany & Co. has been the world's premier jeweler and America's house of design. The company helped shape American culture, including supplying the Union Army during the American Civil War, creating the design that would later become the New York Yankees “NY” logo, and making revisions to the Great Seal of the United States. As part of its branding, the company is strongly associated with its official color, Tiffany Blue , which is a registered trademark.