jupyter / notebook

Jupyter Interactive Notebook
https://jupyter-notebook.readthedocs.io/
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[a11y][Violation][1.4.3 Contrast (Minimum)] Text contrast issues reported on Notebook UI #7490

Open nkn2022 opened 2 weeks ago

nkn2022 commented 2 weeks ago

Description

I am running an accessibility test suite with Notebook UI using the IBM Equal Access Accessibility Checker tool on Chrome browser. The results look good overall, only a few things are missing to reach a first formal level of compliance. So kindly help look into these.

Issues reported were violating WCAG 2.2 requirements. Ref: https://www.ibm.com/able/requirements/checker-rule-sets

Full report (includes information on element locations where issue were found): Accessibility_Report-7a73e10e-f8a4-4a06-a78d-5174a1309c5b.xlsx

Category: 1.4.3 Contrast (Minimum)

Ref: https://www.ibm.com/able/requirements/requirements/?version=v7_3#1_4_3)

**Violation of Rule: text_contrast_sufficient**

List of issues with elements that violate this rule with a screenshots

Issue 1 Text contrast of 4.17 with its background is less than the WCAG AA minimum requirements for text of size 13px and weight of 400 Element location: <span class="ͼ11"> Screenshot: Image

Issue 2 Text contrast of 4.26 with its background is less than the WCAG AA minimum requirements for text of size 13px and weight of 400 Element location: <span class="ͼu"> Screenshot: Image

Reproduce

Here is the screenshot of the UI scanned for the attached report: Image

Expected behavior

The visual presentation of text and images of text has a contrast ratio of at least 4.5:1, with a 3:1 ratio for large-scale text. Reference on how to fix this issue can be found in these links: https://www.ibm.com/able/toolkit/design/visual/#text-color-contrast

RRosio commented 1 week ago

Linking https://github.com/jupyterlab/jupyterlab/issues/16888

nkn2022 commented 6 days ago

@RRosio The JupyterLab issue has been closed as a false positive for the tool. But please note that the issues mentioned here reference different areas of the UI. So these will need further investigation.