Hello, i've produced a new online tool to explore the creation of graduated color palettes :
Its based on the Hue-Saturation-Luminosity components. One can choose a starting color, an ending color, the number of classes and it calculates the intermediates values.
Its a prototype created to help illustrate a web blog about the use of color in scientific illustration, thematic maps in particular.
I'm hoping for your tests and comments, especially in a pedagogical context, thanks.