Need an archival copy of artwork? Digital archiving is the solution for converting your precious 2D or 3D art into a faithful digital copy for purposes of submission, copyright filing, preservation, commercial or personal use.
I perform digital archiving in a controlled, calibrated environment. I light each piece evenly, photograph for proper exposure, and then correct for color and brightness using custom calibration processes.
Do the whites not quite match the pure white of a Web background? That's ideal.
Art paper comes in a great variety of whites, some warmer and some cooler. And white paints, pastels and pencils aren't all the same shade of white either. I don't correct so every white looks the same as a pure Web background. I correct so the whites and colors in the digital archive are faithful to your original, even if the white in the original is off, and that's the point of archiving -- authenticity.
Also, screens display colors differently, which is just a fact of the industry. So don't expect all devices to display a faithful reproduction of the digital file. The best way to know you're seeing a faithful reproduction is to first make sure I'm doing the archiving. Second, you would need a calibrated monitor. And to reproduce it in print you'd need a professional lab.