Color mixing correspond to ideal subtractive color mixing because some light from the subtracted color is still being reflected by one component of the original paint. This results in a darker and desaturated color compared to the color that would be achieved with ideal filters. The three primary colors in subtractive mixing that produce the largest gamut are yellow, magenta and cyan, leading to the CMYK color model widely used in color printing. Historically, painters have used yellow, red and blue in place of these, resulting in reduced gamut. In subtractive mixing of color, the absence of color is white and the
Color printing printing until the 1930s. Typically color separation is the responsibility of the color separator. This includes cleaning up the file to make it print ready and creating a proof for the prepress approval process. The process of color separation starts by separating the original artwork into red, green, and blue components (for example by a digital scanner). Before digital imaging was developed, the traditional method of doing this was to photograph the image three times, using a filter for each color. However this is achieved, the desired result is three grayscale images, which represent the red, green, and blue (RGB)