HTML Palette GeneratorApril 9th, 2009, 4:04 pm
So far the tool makes three palettes:
Base Colour Palette: lighter and darker versions of the user-selected colour.
Similar Colour Palette: User-selected colour modified by increasing red and decreasing blue/green, and vice-versa.
Complementary Colour Palette: lighter and darker versions of the complement of the user-selected colour (complement is created by subtracting the user-selected r/g/b values from 255).255
The exact formulae for generating the HTML colours (each defined by a trio of values for red, green, blue between 0 and 255 - then converted to the six-digit HTML hex value) are explained on the site.