Assuming the applet loads and runs successfully. Using the applet is quite simple and straightforward. Use the checkboxes on the bottom to select/switch between decimal or hexadecimal display values. To see the color which corresponds to a particular RGB value, simply enter the corresponding R)ed, G)reen, B)lue values into the text display/entry boxes and click the refresh button with your mouse. The corresponding color will be displayed in the upper region of the applet.
To scroll through various color values and simultaneously see the corresponding color just press the arrows in the scrollbars. The lower arrow increases the corresponding value(s) and the upper one decreases.
To convert a hexadecimal set of RGB values to decimal, first select the hexadecimal checkbox at the bottom of the applet next to the refresh button. Then enter the corresponding hexadecimal values for R, G, and B. Then hit the refresh button. Then select the decimal checkbox and you'll see the display values change to their corresponding decimal equivalents.
To convert from decimal to hexadecimal first select the decimal chackbox. Enter the RGB values in the corresponding text boxes. Then hit refresh and then select the hexadecimal checkbox.