Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Contrast rules: Tweak background text #2090

Merged
merged 2 commits into from
Jul 25, 2023
Merged

Contrast rules: Tweak background text #2090

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
a2a3006
Contrast rules: Tweak background text
WilcoFiers Jul 20, 2023
b79eb68
Merge branch 'develop' into contrast-background-tweaks
WilcoFiers Jul 25, 2023
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 1 addition & 1 deletion _rules/text-contrast-afw4f7.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -57,7 +57,7 @@ For each test target, the [highest possible contrast][] between the [foreground

## Background

Passing this rule does not mean that the text has sufficient color contrast. If all background pixels have a low contrast with all foreground pixels, the success criterion is guaranteed to not be satisfied. When some pixels have sufficient contrast, and others do not, legibility should be considered. There is no clear method for determining legibility, which is why this is out of scope for this rule.
Passing this rule does not mean that the text has sufficient color contrast. If all background pixels have a low contrast with all foreground pixels, the success criterion is guaranteed to not be satisfied. When some pixels have sufficient contrast, and others do not, legibility should be considered. There is no clear method for determining legibility when some but not all pixels have sufficient contrast, which is why passing this rule does not necessarily mean the corresponding success criterion is met.

This rule is designed specifically for [1.4.3 Contrast (Minimum)][sc143], which has the expected contrast ratio of 4.5:1 (or 3:1 for large text). Because text that fails a contrast ratio of 4.5:1 also fails a contrast ratio of 7:1, this rule maps to [1.4.6 Contrast (Enhanced)][sc146] as well. In order to adequately test the [expectation](#expectation), some of the passed examples do not satisfy [1.4.6 Contrast (Enhanced)][sc146].

Expand Down
2 changes: 1 addition & 1 deletion _rules/text-contrast-enhanced-09o5cg.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -62,7 +62,7 @@ For each test target, the [highest possible contrast][] between the [foreground

## Background

Passing this rule does not mean that the text has sufficient color contrast. If all background pixels have a low contrast with all foreground pixels, the success criterion is guaranteed to not be satisfied. When some pixels have sufficient contrast, and others do not, legibility should be considered. There is no clear method for determining legibility, which is why this is out of scope for this rule.
Passing this rule does not mean that the text has sufficient color contrast. If all background pixels have a low contrast with all foreground pixels, the success criterion is guaranteed to not be satisfied. When some pixels have sufficient contrast, and others do not, legibility should be considered. There is no clear method for determining legibility when some but not all pixels have sufficient contrast, which is why passing this rule does not necessarily mean the corresponding success criterion is met.

When the text color or background color is not specified in the web page, colors from other [origins][] will be used. Testers must ensure colors are not affected by styles from a [user origin][], such as a custom style sheet. Contrast issues caused by specifying the text color but not the background or vice versa, must be tested separately from this rule.

Expand Down