HTML color charts can be found on many websites, including computerhope.com, webmonkey.com and w3schools.com. Many websites offer more than one option to assist in choosing the correct hexadecimal code for the desired color.
Computerhope.com offers a list which is sorted by color and hue as well as a HTML color picker which generates a HTML code for a specifically chosen color. Alternatively, w3schools.com offers more than one color chart and allows users to sort the more comprehensive HTML color chart either by color name or the hexadecimal value. Clicking either the shades or mix option next to each color gives the user more options for lighter or darker values of that color.