Helpful Links for Choosing Colors in RGB and Hex Formats

Named Colors with RGB and Hexadecimal Codes
This page lists over 500 colors by color name, Hex value, RGB value and Microsoft Access code number. You cannot specify these colors in HTML and CSS by their color name but you can use their RGB hexadecimal value.

RGB to Hex Color Code:

This page has a Color Code Calculator for converting RGB to hexadecimal or hexadecimal to RGB. In addition, it provides a color picker as one of the methods to color selection.  When you update one of the three input types (RGB, Hexadecimal or Color Picker), the other two methods will be automatically calculated and updated.