I think the primary difference between CMYK and RGB is that CMYK is a subtractive color space, while RGB is cumulative (I don't know if these are the correct te

I think the primary difference between CMYK and RGB is that CMYK is a subtractive color space, while RGB is cumulative (I don't know if these are the correct terms in English). The first is used for reflective surfaces, while the other is used for light sources. On reflexive surfaces, you make colors by subtracting wave lengths (the paint has pigments that absorb specific wavelengths). On light sources, like our computer screens, we make color by combining primary wavelengths.