1.4.3 Kontraszt (minimum): A szöveg és a képként reprezentált szöveg vizuális megjelenítése esetében a kontraszt arány minimum 5:1, kivéve az alábbi esetben: (AA szint)
Nagybetű: A nagy betűmérettel szerkesztett szövegek és a nagy betűméretű képként reprezentált szövegek esetében a kontrasztarány minimum 3:1;
large scale (text)
with at least 18 point or 14 point bold or font size that would yield equivalent size for Chinese, Japanese and Korean (CJK) fonts
Note 1: Fonts with extraordinarily thin strokes or unusual features and characteristics that reduce the familiarity of their letter forms are harder to read, especially at lower contrast levels.
Note 2: Font size is the size when the content is delivered. It does not include resizing that may be done by a user.
Note 3: The actual size of the character that a user sees is dependent both on the author-defined size and the users display or user-agent settings. For many mainstream body text fonts, 14 and 18 point is roughly equivalent to 1.2 and 1.5 em or to 120% or 150% of the default size for body text (assuming that the body font is 100%), but authors would need to check this for the particular fonts in use. When fonts are defined in relative units, the actual point size is calculated by the user agent for display. The point size should be obtained from the user agent, or calculated based on font metrics as the user agent does, when evaluating this success criterion. Users who have low vision would be responsible for choosing appropriate settings.
Note 4: When using text without specifying the font size, the smallest font size used on major browsers for unspecified text would be a reasonable size to assume for the font. If a level 1 heading is rendered in 14pt bold or higher on major browsers, then it would be reasonable to assume it is large text. Relative scaling can be calculated from the default sizes in a similar fashion.
Note 5: The 18 and 14 point sizes for roman texts are taken from the minimum size for large print (14pt) and the larger standard font size (18pt). For other fonts such as CJK languages the "equivalent" sizes would be the minimum large print size used for those languages and the next larger standard large print size.
Járulékosság: Az a szöveg vagy képként reprezentált szöveg nem rendelkezik minimum-kontraszt feltétellel, amely inaktív felhasználói interfész alkotóeleme, vagy csupán dekoráció, vagy egy képen szereplő járulékos szöveg, vagy nem látható.
user interface component
a part of the content that is perceived by users as a single control for a distinct function
Note 1: Multiple user interface components may be implemented as a single programmatic element. Components here is not tied to programming techniques, but rather to what the user perceives as separate controls.
Note 2: User interface components include form elements and links as well as components generated by scripts.
Example: An applet has a "control" that can be used to move through content by line or page or random access. Since each of these would need to have a name and be setable independently, they would each be a "user interface component."
pure decoration
serving only an aesthetic purpose, providing no information, and having no functionality
Note: Text is only purely decorative if the words can be rearranged or substituted without changing their purpose.
Example: The cover page of a dictionary has random words in very light text in the background.
logó típusok: A logóhoz, vagy márkanévhez tartozó szövegek nem rendelkeznek minimum kontraszt feltétellel.
http://www.w3.org/TR/2008/PR-WCAG20-20081103/#puredecdef
