This can result in high ∆E and noticeable banding.Low bit depth means the steps between each color is larger.A large gamut at a low bit depth is still "large" but with few total colors.You could have a very large gamut but only a few hundred colors.Gamut size and number of colors are not related.And gamut size is not related to number of colors.Īs for "theoretical number of colors" - you can calculate the number of combinations for a given bit depth, but if you mean the number of different colors you can print, or moreover, the number you can perceive, that's a much more complicated answer. The answer is that CMYK is a color model, but not a color space, and you need to define a colorspace which will then define the gamut size.
In other words, you can't just hand-wave away the printing technology as if it wasn't relevant, because it is determinant. For CMYK that means knowing the destination profile or device, even if you want to assume 8bit data. Therefore, you can not state that a particular color model possesses any particular number of colors without knowing the bit depth and colorspace parameters. Output device and/or colorspace may place additional limitations of the "number" of colors.Bit depth partially defines number of colors.Allowing for the decimal points, is this correct?ĬMYK as a color model does not define a gamut, nor does it define a number of colors. My gut feeling is saying that this quantity of colour combinations isn't possible in CMYK but I can't work it out differently. I know that the differences between a lot of similar colours might not be distinguishable by the human eye but that's by the by. If I allowed a maximum of 3 decimal places, then: and that's only allowing for steps of whole integers. One website mentions 16,000 colours available, but I calculate it to be more: How many possible colour combinations are there in a the CMYK gamut? I know there are advanced printing methods such as half-toning and spot colours, but excluding print methods, how many possible colours are available in CMYK?
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