/cgl/ - Cosplay & EGL

So, I'm looking to dye my hair blue-black, leaning more black than blue. Like in the picture, but definitely leaning more A and C than B (as cool as it looks on some people, I would look TERRIBLE with bright hair). I know that the pictures are edited, too, but it's the look I'm going for.

I have black hair with red undertones naturally, and it's never been dyed before. Do I just use a blue dye on my hair, or is there a specific black-blue dye color that I should look for? Do I need to bleach my hair?