Copper and graphite work well together. Perhaps look at something along the lines of Calacatta Marble. Here’s a small kitchen we did. Graphite on the bottom with copper handles and Dove Grey on the top, Calacatta Marble worktops

Hi Christina, Great choice, however I would go for three of the same. It will help you create a cohesive scheme in your kitchen. Too many colours confuse the eye and the focal point gets missed. Enjoy your new space! Neha Expressionbydesign.co.uk

It will depend on what else you have in the room. What colour are the sofas, tables, curtains etc?

Hi Katie-Eleanor Art. There many many various combinations of colours that are great together. I always look for inspirations in nature - you can never go wrong with that... think peacock feathers for example... or coliber bird... But if you wish to explore more technical side of colour matching, I'd suggest referring to the Colour Wheel. Here's a link to one sites that explains it a bit better, but you will find plenty information on the Internet: https://lifehacker.com/learn-the-basics-of-color-theory-to-know-what-looks-goo-1608972072 Hope it helps! :-) Best regards, Anna