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This understanding document is part of the draft WCAG 2.2 content. Pixels modified by user agent resolution enhancements and anti-aliasing Note: Contrast calculations can be based on colors defined within the technology (suchĪs HTML, CSS and SVG). Indicator for sub-component selection is measured against 1.4.11 Non-text Contrast requirements, not against this Criterion. Where selectable sub-components have no differentiated focus indicator, the visual However, it may also be possible to indicate user interactionįor such sub-components by relying strictly on a visual indication of which item is Note: Examples of sub-components that may receive a focus indicator are menu items

Where a user interface component has active sub-components, if a sub-component receivesĪ focus indicator, these requirements can be applied to the sub-component instead. has a contrast ratio of at least 3:1 against adjacent non-focus-indicator colors,.has a contrast ratio of at least 3:1 against the same pixels in the unfocused state,.The shortest side of the minimum bounding box of the unfocused component, and At least as large as the area of a 1 CSS pixel thick perimeter of the unfocused component, or is at least as large as a 4 CSS pixel thick line along.An area of the focus indicator meets all the following:.The focus indicator and the indicator's background color are not modified by the author,.