A color model is a mathematical model describing the way colors can be represented as numbers, creating different dimensions that correlate to the three dimensions of space (depth, height, width). When this model is associated with a precise description of how the components are to be interpreted (viewed, printed, etc.), the resulting set of colors is called color space. RGB (with R, G and B each becoming a “dimension” of space) and CMYK (again, with C, M and Y each becoming a “dimension” of space) are two common color models.