The Intersex flag was created by Organisation Intersex International Australia in July 2013 to create a flag "that is not derivative, but is yet firmly grounded in meaning." The organisation aimed to create a symbol without gendered pink and blue colors. It describes yellow and purple as "hermaphrodite" colors. The organisation describes it as freely available "for use by any intersex person or organisation who wishes to use it, in a human rights affirming community context." David B. Lawrence, 22 September 2016 Source:Wikipedia article
An interesting design making use of the plain ring symbol "⚪", akin to the well known Venus/female symbol "♀" and the Mars/male symbol "♂". There is a whole wide gamut of intersectioning concepts that are relevant here, concerning sex, gender, sexual orientation, and gender expression, and psychology, physiology, and sociology of sex and gender. In that regard, the plain ring symbol "⚪" can also some times mean asexuality and/or genderlessness, which is not the same as what this flag was created to represent. António Martins-Tuválkin, 15 March 2017