Hi colour-gifted people, colour-challenged computer programmer here. I cannot figure out an issue regarding colours. How do you find colours "related" to a given one? I've quoted "related" because I've used it in a special meaning I don't know the proper term for. Let me explain. Suppose you have the bluish RGB colour "#002b36": what would this colour be if it were greenish, reddish, etc instead of bluish? How is such relationship among colours called? Is there a way to calculate such "related" colours? Should I convert the RGB encoding to something else, first? I've tried permutating the R, G and B values, but that does not seem to be a solution. Thank you.