The charts at W3Schools.com and ComputerHope.com are two different HTML color charts. Web designers use HTML color codes to change the color of the background or the texts and tables on a website.
Click Shades on the chart at W3 Schools to view the different shades of a color and their HTML codes. In comparison, the chart at Computer Hope already displays shades. Clicking a color code on either chart directs the user to pages with more information on that color, including a conversion to RGB color code. Computer Hope also converts the values into HSL colors and suggests complementary colors.