There are LOTS of 16 million color pickers out there. Many of them are slow. Most of them only show one color at a time. Colors on web pages do not exist alone. How they look together is very importnt. See three colors together. Compare how two colors look with a third. Open separate windows. Compare different combos. Display a full layout of sample web pages using any of 4,722,366,482,869,645,213,696 different combos. Hex or decimal numbers.