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  2. Contrast ratio - Wikipedia

    en.wikipedia.org/wiki/Contrast_ratio

    An LCD technology is dynamic contrast (DC), also called advanced contrast ratio (ACR), and smart contrast ratio (SCR [4]) and various other designations.When there is a need to display a dark image, a display that supports dynamic contrast underpowers the backlight lamp (or decreases the aperture of the projector's lens using an iris), but proportionately amplifies the transmission through the ...

  3. Wikipedia:Colour contrast - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Colour_contrast

    Snook's Colour Contrast Check provides a comprehensive check of whether a particular choice of foreground and background colours meets WCAG 2.2 standards for brightness difference, colour difference and contrast ratio.

  4. Template:Color contrast ratio - Wikipedia

    en.wikipedia.org/wiki/Template:Color_contrast_ratio

    Colour Contrast Check G18: Ensuring that a contrast ratio of at least 4.5:1 exists between text (and images of text) and background behind the text Index of Color Contrast Samples

  5. Wikipedia:Manual of Style/Accessibility/Colors - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Manual_of_Style/...

    It is best to choose background colors that offer sufficient contrast in relation to text and blue links, which is also the color of references, both of which are very common in most articles. Use the WCAG link contrast checker to ensure that the chosen background color offers the recommended WCAG AA level of contrast against normal text ...

  6. Display contrast - Wikipedia

    en.wikipedia.org/wiki/Display_contrast

    The "luminance contrast" is the ratio between the higher luminance, L H, and the lower luminance, L L, that define the feature to be detected.This ratio, often called contrast ratio, CR, (actually being a luminance ratio), is often used for high luminances and for specification of the contrast of electronic visual display devices.

  7. Template:Greater color contrast ratio - Wikipedia

    en.wikipedia.org/wiki/Template:Greater_color...

    For accessibility, WCAG 2.0 AA guidelines require a contrast ratio of 3 or larger for large text, and 4.5 or larger for normal sized text. In the default mode, color2 and color3 are white and black, and the selected color pair will always have a contrast ratio greater than 4.58.

  8. Contrast (vision) - Wikipedia

    en.wikipedia.org/wiki/Contrast_(vision)

    The maximum contrast of an image is termed the contrast ratio or dynamic range. In images where the contrast ratio approaches the maximum possible for the medium, there is a conservation of contrast. In such cases, increasing contrast in certain parts of the image will necessarily result in a decrease in contrast elsewhere.

  9. Template:Ensure AA contrast ratio - Wikipedia

    en.wikipedia.org/wiki/Template:Ensure_AA...

    This template checks for compliance with WCAG G17, i.e. that a background–foreground colour combination has got a contrast ratio of more than 4.5:1.It takes two arguments, the base colour value, and the tracking category, category, to place non-compliant transclusions in.