It was Wednesday, June 19, when Major General Gordon Granger and his troops rode into Galveston, bringing with them General Order No. 3, a proclamation officially ending slavery in the state of Texas.

It's red, white and blue—and a proud symbol of African American history. Meet the Juneteenth flag.

Learn how this rare hue shows up in the natural world with some of the Smithsonian’s bluest specimens Ellyn Lapointe This time of year, the color blue is everywhere from holiday lights and decorations ...