Hallo~ I was making this color swatch ref for myself, but I thought to release a version to dA as well. :> Sharing is caring. First are hairs, then some metals, and some fabrics, and then skintones. I didn't do just every single color, obviously, just some that I have more trouble with or often forget how to do.
This is just a skeletal reference, meaning you should not rely JUST on these colors. They are more so the foundation colors, and should be enhanced with some other colors and texturing, of course. :> I hope it's helpful. <3