Chillgender is a xenogender in which your gender is chill, and lax, it also comfortable. It is often different shades of blue, but can be other colors to identify with ones' alignment.
For instance. Chillgirl is an alligned female with soft shades of pink, but their gender is still very relaxed. Chillboy is the same for chillgirl, just with softer hues of blue.
History
The term was coined on Discord by Yoongi, a headmate of the Yellow Cab Collective.