[5] The design of the biangles began with the pink triangle, a Nazi concentration camp badge that later became a symbol of gay liberation representing homosexuality.

The key to understanding the symbolism of the Bi Pride Flag is to know that the purple pixels of color blend unnoticeably into both the pink and blue, just as in the 'real world,' where bi people blend unnoticeably into both the gay/lesbian and straight communities.Since the original design, the purple overlap has been reinterpreted and is now widely understood to represent attraction regardless of sex or gender.

[citation needed] In vexillological terms, the bisexual pride flag is a simple horizontal tricolor.

[1] In 1999, Michael Page established the use of the trillium flower as a symbol of bisexuality,[8] and in 2001, Francisco Javier Lagunes Gaitán and Miguel Angel Corona designed a Mexican variant of the bisexual pride flag, which is emblazoned with an emblem of a trillium flower.

[9][10][11] In 1998, Page stated that the bisexual pride flag was "for free public and commercial use" and that it was "not patented, trademarked or service marked".