I dont think i will ever understand what people have against wearing black and blue together...you know? For instance, yesterday i wore a dark navy blazer with a black v-neck, it was cute. and i felt cute. until someone asked me what was i thinking, mixing black and blue together ( by the way, im staring outside, and it just started snowing, okay winter, its on! ) um hello, why not? recently i think fashion has really evolved so much so that the norms for fashion are not really followed any more, and i love it.
So ignore the social norms and tendencies against wearing black and blue, and just go for it.