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Splitting hairs as it were but no, not necessarily as the photo representation of the actual color chart may or may not have been lit by the same temperature lamp and the device taking the picture may or may not have been set to the same white balance.These charts are useful in that since my monitor calibration is a constant when I compare a color from that chart to say a Tamiya color chart since I am comparing on the same monitor I can decide if they are a useful match.