Here's how I would AA your piece with your colors. My version is on the left i.imgur.com/3MvBlAX.png
The red AA doesn't go well on the black either, it would look better without. However this is quite neat.
The pink doesn't really work against the blue as AA but this is pretty stylish!
thank you all for the feedback! i was mostly seeing what i could do with a more limited pallete with this, but regardless i'll take your advice and see what i can do to improve this