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The Web Content Accessibility Guidelines recommend a contrast ratio of at least 4.5:1 between the relative luminance of text and its background color [33] or at least 3:1 for large text. Enhanced accessibility requires contrast ratios greater than 7:1.
This text is different to change text and background color {{font color||yellow|This text is different}} ... free color blindness simulator for Windows, Mac and Linux ...
A color wheel is a tool that provides a visual representation of the relationships between all possible hues. The primary colors are arranged around a circle at equal (120 degree) intervals. (Warning: Color wheels frequently depict "Painter's Colors" primary colors, which leads to a different set of hues than additive colors.)
The background figure is the CIE xy chromaticity diagram. The choice of primary colors is related to the physiology of the human eye; good primaries are stimuli that maximize the difference between the responses of the cone cells of the human retina to light of different wavelengths, and that thereby make a large color triangle. [7]
(Optional) Name of main shade, defaults to the color parameter. catcolorname (Optional) Color name in the Category:Shades of ..., defaults to the color parameter. shownote (Optional) If set will show a note stating that the samples should not be taken to be definitive. caveat (Optional) Note to show at the bottom of the template.
It is able to store a wider range of color values than sRGB. The Wide Gamut color space is an expanded version of the Adobe RGB color space, developed in 1998. As a comparison, the Adobe Wide Gamut RGB color space encompasses 77.6% of the visible colors specified by the Lab color space, whilst the standard Adobe RGB color space covers just 50.6%.
Download QR code; Print/export Download as PDF; Printable version; ... } – sets both text and background color {} — colored table header cell {{Color ...
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