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SC1-4-1-img
From Automated WCAG Monitoring Community Group
Check if images meet 1.4.1 Use of Color.
Contents
Status
1: First Draft
Open issues
- Failure F13 relates to two SCs. How to handle that?
Background
- G14: Ensuring that information conveyed by color differences is also available in text
- G111: Using color and pattern
- F13: Failure of Success Criterion 1.1.1 and 1.4.1 due to having a text alternative that does not include information that is conveyed by color differences in the image
- Comments from UWEM 2.0 draft:
- Not automatable.
- Cannot automatically determine if colour of images is used to convey information.
Description
This test checks …
Assumptions
Test procedure
UTT: Required user expertise and skills
Select one of:
- no prior knowledge
- basic understanding of HTML
- basic understanding of WCAG
- advanced understanding of WCAG
Specify: Are there any additional requirements for the user profile?
(i.e.: A question about images can’t be answered by a blind person.)
Test subject
Select one of:
- HTML source (= unprocessed source of the web page)
- DOM tree (= generated source after onload scripts are applied (no user interaction). CSS is taken into account so that elements that are not displayed are not tested.)
- DOM and CSS (= same as 2. plus computed style for each element)
- rendered page (= page as it is presented in a browser)
Specify: Does the test require the checking of multiple pages? (single page / multiple pages)
Selector (tool, user)
(CSS selector)
Step 1 (tool, user)
to do
Step 2 (tool, user)
to do