Last year, some fella released an online tool / website that simply enabled you to pick/select tints of a hex colour and find the equivalent hex value for the tint. For example, if I wanted the hex equivalent of 60% of #FF6600. Really useful tool for building up color palettes for use within your stylesheets and in photoshop mockups.
Can't for the life of me remember the site url, except that it was quite a short url. Anyone remember it or use it and can remind me? (By the way it was nothing like this sort of site!)