| It depends on how limited you want your palette, but I would consider all three values. A change in hue will have the greatest impact of course, but a blue with full value will look very different than one with half value and same for saturation. I'm not sure if there are algorythms for this, but to get an idea of how it all works together maybe you should just play with the color picker of your favorite image editting program. By playing with the visual display you can get an idea for your tolerance ranges. |