Hsv (also known as Hsb) is similar to Hsl. They're both based on cylindrical geometries, but Hsv is based on a "Hexacone" model while Hsl is based on a "Double Hexacone" model. Read more about the differences on wikipedia.
The Rgb color space consists of all possible colors that can be made by the combination of red, green, and blue light. It's a popular model in photography, television, and computer graphics.
Color conversions performed using the open source ColorMine library.