yes and no - diabolical is дьявольский (devilish демонический) shows really striking and unnatural features. Sometimes bad it still can attract you very much.
дьявольский характер - very furious and spoiled character
вы просто дьявольски (or чертовски) привлекательны! - You're just diabolical, devilish attractive!
чёртов is often used like swearing - like fu**ing, fu**ed and such. But with softer meaning. And it still keeps its helly meaning - Чёртов мост - Devil's bridge, but этот чёртов мост закрыт для проезда means: This fu**ed bridge is closed for driving!

Man, does it have any sense for you? I can't explain clear