The Color Palette
The world is a colorful place. Web browsers display millions of those colors every day to make the pages seem real and interesting. Browser colors are displayed in combinations of red, green, and blue, called RGB. This is a system of indexing colors by assigning values of 0 to 255 in each of the three colors, ranging from no saturation (0) to full saturation (255). Black has a saturation of 0 and white has a saturation of 255. In HTML documents these colors are represented as six hexadecimal values, preceded by a # sign. White is #FFFFFF and black is #000000. 6
Although there are millions of different combinations of color, it is best when working with Web pages to use what are called Web-safe colors.