For monitor calibration we recommend using the Calibrite Display Pro HL Display-Pro-HL with the following numbers. 5500K or D55 for the White Point 2.0 Gamma Luminance of 200CD/M2 These numbers should get you a close match to our output. But the best way to make sure is to submit a test order, and then check the prints against your monitor. Good test images would include images that shows fine highlight/shadow detail and skin tones. For print viewing ideally you would be viewing the prints under the same color of light as you’ve calibrated your monitor too – 5500k. This will get you the closest screen to print match. Using daylight or window light is not recommended since the color of daylight can change drastically over the course of a day.