It's a site where you can create your own colour inpsirations from the full spectrum of colours, it is such fun!!
You could so easily get carried away and just create thousands of these palettes of colours (I had to stop myself).
These are two that I just made to show you what it's all about.
You can also search through other peoples palettes to get inspiration and there are some wonderful combinations.
You have to go and try it out, let me know what you think of it.