Human Rights Campaign – Marriage Center
All about same-sex marriages (SSM), civil unions & domestic partnerships
The original rainbow flag, called the Freedom Flag, was devised by Gilbert Baker in 1978. The design has undergone several revisions since its debut with 8 colored stripes, and today the most common variant consists of 6 stripes: red, orange, yellow, green, blue, and violet.
Picture of Gilbert Baker's original Freedom Flag showing the meaning of the 8 colors.