This is an Interactive RGB (Red Green Blue) Color Chart. There are 16 levels for each Red, Green and Blue, over 4000 different combinations for both background and text. To avoid dithering use websafe colors (FF, CC, 99, 66, 33 and 00). Click on the color bar to change the color level. The color level is highest(FF) on the top and lowest(00) at the bottom. The color changes as you click and it will display the hexadecimal value for the color.