Contrast ratios are an important concept in graphic composition and human perception. They refer to the variation in brightness between the lightest and darkest parts of a graphical display. A higher brightness level means that there is a greater disparity between bright and dim areas, which can significantly affect https://scott917w4k.wikipowell.com/6420930/understanding_the_role_of_tonal_contrast_ratios_on_optical_sharpness_and_user_perception