I have no 'one single' favourite colour, Sketch and neither do I think there is there one 'good colour' for a website above all others (imho). Being interested in design, graphics and photography means I like all colours in the right context. It's how those colours are used which makes them successful choices or not. Because I might like MIDNIGHT BLUE does not mean it would be the best choice for your site, it might very well be perfect or it might very well look terrible. But I haven't seen your site design and it's content (product photos etc), so I can't say what might work best or what I'd personally choose.
As I say, if you showed us a prototype with a variety of colour selections, then I could make a choice.