Abraham Lincoln High School is a public high school, founded in 1959, in Denver, Colorado, United States, and is named after President Abraham Lincoln. The school's colors are blue and grey, representing the colors worn by the soldiers during the US Civil War; blue represents the North, and grey represents the South. The original shade used in the school's colors was royal blue, distinguishing it from Manual High School's Carolina blue & John F. Kennedy's navy blue in the Denver Public School District. The blue was transitioned from royal to navy beginning in the late 1990s. Some instances can be seen where silver replaces grey.