Why do PMS [Pantone] colours look different when viewed online?
Printers and monitors use different colour profiles to view in. Monitors use RGB Colour and printers use CMYK. Even a carefully calibrated monitor may not reproduce the colour in the same way as print. Matching monitor to prints requires a quality monitor, good ambient light, a calibration solution (hardware and software) a colour profile model and a great amount of knowledge about colour management. Different monitors will have varying levels of ability to display colours; some can display many more shades than others. Resolution affects colour because monitors may have different numbers of dots-per-inch (DPI) on their screens, the higher the resolution the clearer and more accurate images appear.
