Colour Accuracy

This value represents how close the colours a monitor outputs are to the colours it should be displaying. It's calculated using the Delta E 1994 formula and is the average of six readings (red, green, blue, cyan, magneta and yellow). Values under 1 are considered imperceptible (and usually only achievable on professional displays or with a colorimeter and calibration software), while values under 3 are very good and under 5 are still decent. Values over 10 will result in noticeable colour inaccuracies.

Grayscale Tracking

This value represents how well a monitor is able to keep white values neutral at multiple levels of brightness. It's calculated using the Delta E 1994 formula and is the average of ten measured values between 10 and 100 percent brightness using 10 percent intervals. Good and bad values are the same as they are for colour accuracy.