This panel is just another way to control the colors that you use for lines/strokes and fills/gradients. It offers you a wider palette of shades than the default color picker, and more ways to enter values--making it easier to match colors picked from a JPEG image or an HTML document. In the RGB fields, you can enter red, green, and blue values to match standard color sliders; in the field below the large color sample square (the one that reads #FF0000 in the image), you can enter HTML color values for a precise match for anything coded in your web page.

