The rainbow has come to be seen by many as a symbol of Peace. It has been used in the past few decades by popular movements for Peace and the environment.

Greek mythology associated the rainbow with Iris, the goddess who brought messages from the gods of Mount Olympus to the mortals below.

In ancient China the colors symbolize the union of Yin and Yang (making it a common symbol for marriage.)It was often drew of the sky dragon, connecting heaven and earth.

In Christian tradition it symbolized gods forgiveness, as it was placed in the sky as the arch of Peace after the Biblical Flood a symbol of the covenant between god and mankind.