I've immediately thought about it when I saw the title. I was wondering what value is added. The interface is quite different.
My problem here is that you cannot see where you are heading, you are just moving your mouse everywhere until you find a color.
It gets also complicated when you found a color but want afterwise to change it. You come back the website, but how do you find where was your color? How to make an orange a little more redish as an example? These are things I often do when I am looking for colors for a website UI or when changing a picture in Lightroom/Darktable. Maybe I missed some features?
ColourLovers has a palette creator and a browser in which there are many ranked palettes that people (site users and hence those artistically inclined are likely to be the major demographic) have scored and favourited, etc..
For some reason there are an endless procession of these sorts of color pickers. I really like this one, though as others mentioned it should immediately put you into color sets, as there is a first impression that it is a trivial single color picker.
I made one of these sorts of things about a decade ago, though obviously it is much simpler - http://colors.yafla.com/
Still get hundreds of visitors a day to it, which surprises me greatly.
