This is a list of hex color codes, with images. Hex color codes, also known as web colors or hex codes are used in HTML. Hexadecimal colors work in that they use hex codes, 3 pairs of digits with each pair representing red, green, and blue respectively. This is a complete list of colors and should be quite useful to anyone working in web design, like me. My personal favorite is "Blue pigment", which uses hex code #333399. Enjoy!