Contrast ratio is an important criterion in screen quality. The ratio is derived by the brightest luminance divided by the darkest luminance in candelas per square meter (cd/m 2). For example ...

If you choose to use color, you should ensure adequate color contrast, at least a 4.5:1 contrast ratio between the text and background and accessibility friendly colors. Users should be able to scan a ...

The viewer's eye is drawn to these small patches of light tone. There is little contrast in Whistler's colour palette, so it is contrast of tones alone that creates these focal points. In a ...

Adjusting the LED backlight in an LCD TV or monitor on the fly to create a higher contrast ratio. When a dark image is displayed, the LEDs are dimmed or turned off behind the pixels. When light ...