You have millions of colours to choose from for your website, which makes choosing a colour scheme an overwhelming decision. Smashing Magazine's guide to choosing colours will help you find the perfect colours.
Perhaps the best tip, though, is to choose just two colours: a base colour and an accent colour, instead of trying to add five or six colours in addition to the neutrals, as in the colour palettes above. The reason why you only need to pick two colours is you're probably going to be using two or three neutral colours for your site already: white, dark grey and perhaps light grey. Keep it simple.
The guide linked below goes into much more depth about choosing colours. It can really help narrow down that universe of colours for your site or other design project.
A Simple Web Developer's Guide to Colour [Smashing MAgazine]