Colordot is a simple and useful online color matching tool. The color on the screen will change with the movement of the mouse. When the color you like appears, you can click the mouse to save it. In the meantime, a new area will appear and you can continue to move and click the mouse so as to save it.

You can generate several colors at random to see if they are compatible or whether they can create novel match that are beyond expectation. You can adjust the RGB and HSL values of every color you have saved.