Splash can vary a lot. This one is my darkest:
My lightest:
Yours looks like its on a darker blue base, with some splashing on top. Breed it to a blue, if its splash, you'll only get blue and splash chicks. If its blue, which I doubt, you'll get blue, black and splash. I have a Sizzle pullet that I think is a super dark splash, she doesn't really look like yours, but might give you some idea of how they can vary.
My lightest:
Yours looks like its on a darker blue base, with some splashing on top. Breed it to a blue, if its splash, you'll only get blue and splash chicks. If its blue, which I doubt, you'll get blue, black and splash. I have a Sizzle pullet that I think is a super dark splash, she doesn't really look like yours, but might give you some idea of how they can vary.