Contrast ratio is measured as the difference between the brightest and darkest colors on the screen and is associated with LCD, Plasma and projection televisions and monitors. TVs with a higher contrast ratio are considered to be better than ones with lower contrast ratios.

There are two ways of measuring contrast ratio. The first is True or On-screen Contrast Ratio and the second is Dynamic Contrast Ratio. True or On-screen contrast ratio measures the difference between the brightest and darkest images a TV can produce simultaneously or at the same time. The ratio of the brightest and darkest images a TV can produce over time is called dynamic contrast ratio. Dynamic contrast measures the display twice, once with a dark screen and once with a bright screen. Dynamic contrast ratio is often four or five times higher than the static specification, so while comparing make sure you are considering them at equal terms. But in the end it is always advisable that you inspect competing models yourself for their contrast performance before purchasing.