Androgynos (not to be confused with Androgyne or Androgynous) as well as the other terms in the Culture-exclusive Genders folder are genders that are specific to certain cultures and should not be used by people not of that culture. If you're not sure you're able to use this, feel free to send an ask on ask-pride-color-scheme.tumblr.com, I have followers that could help you out!
From the submission [Link]:
"[Androgynos and Tumtum] are both genders from Jewish culture, so [both definitions are] here. Tumtum [Link] is where a person’s gender is hidden or private, and is closest to agender. Androgynos [This one] is where a person is intersex or otherwise has qualities of both a woman and a man, and thus would be closest to bigender. Both genders are assigned to children if they are born as intersex.
Unfortunately, the most that you would see of tumtum and androgynos is discussions of how to deal with the child’s genitals (as in, whether or not to perform surgery; tumtum is usually assigned to intersex conditions where the genitals end up covered by skin, and androgynos is assigned to intersex conditions where they are a mix of the usual two). Either that, or these two genders are treated as mere “what if” genders for certain laws (for instance, if a law states different treatment for women and men, how would it apply to someone who is both or neither? That sort of thing).
Although there are only two of us in our chatroom (I am tumtum, my friend is androgynos), there is definitely a movement IRL to bring more attention to these two genders. We encourage any nonbinary Jewish people who are reading this to consider if tumtum or androgynos may be fitting for them. Or at least reblogging this so that the information may spread! For helpful links, again, there isn’t too much other that repeats of what I’ve mentioned here, but this is a wonderful autobiographical account of a tumtum rabbi and their dealings in promoting these two genders as viable Jewish nonbinary genders!
For the symbolism of the flags, we put the white and blue bars on both to represent a connection to Judaism. In particular, blue is considered a divine color, associated with the sky and G-d. Meanwhile white has a general symbolism of purity, as it does in many other cultures. The grey for tumtum is because I’ve found grey has an association with agender, which as I mentioned is probably the closest English equivalent to tumtum. Not to mention, grey can be seen as some obscure/not specific/hiding, similar to the idea of tumtum gender. For the androgynos flag, the blue and red bars represent man and woman, thus how androgynos is seen as a mix of the two."