All you do is go to their site at http://www.dulux.ie/colours/families/index.jsp and it shows you all the colours divided up into sections. Then you pick a colour group e.g. blues and then choose your favourite blue and the wizard chooses three more colours for you which will co-ordinate with your chosen colour.
It came up with some fantastic colour combinations I'd never have thought of. Try it, it's loads of fun.
Using the Dulux site, I chose "Matinee" (the top colour) and it choose Lilac, Frappe and Blush:
So I took a look at the Bazzill at TheScrapbookStore.ie and choose "Paris" which looked the closest to "Matinee" and then selected Wisteria, Bark and San Francisco. The Bazzill brown is darker but still a lovely match - very luxurious!
For my house I chose the colour "Blue Diamond":