X-rite for example sells color test cards, verified color PNGs and color measurement meters. You can use those to make sure the color matches up from paper to s

X-rite for example sells color test cards, verified color PNGs and color measurement meters. You can use those to make sure the color matches up from paper to scanned file to screen. The opposite direction is more difficult, because most screens can display colors that you can't print with CMYK.