[OPEN] Add back the Lightest color row and white block for the default color picker

Issue Documented: 2025-07-08
Canvas

Engineers are currently investigating the issue.

Description

We updated the default color options in the Text and Highlight color pickers in the Rich Content Editor (TinyMCE) to ensure accessibility when used against a white background. Because the Text and Highlight color pickers are linked in TinyMCE, this change also affected the default highlight colors.

In most cases, users apply highlighting to black text. The updated highlight color options now cause contrast issues in these common use cases, making highlighted text harder to read.

Expected Behavior

Highlight colors should provide sufficient contrast when applied to black text, as this is the most common usage scenario.

Workaround

No workaround exists at this time.

Steps to Reproduce

 

  • Open the Rich Content Editor in any Canvas course (e.g., create or edit a page, assignment, discussion, etc.).

  • Type some text and ensure it displays in black (default text color).

  • Highlight a portion of the black text.

  • Click the Highlight color picker (marker icon).

  • Select one of the new default highlight colors.

  • Observe the contrast between the highlight color and the black text.


 

Additional Info

RCX-3593

Known issues indicate notable behaviors that have been escalated to the Canvas engineering team. Known issues are not a guarantee for an immediate resolution. This document is for informational purposes only and does not replace the Support process. If you are encountering the behavior outlined in this document, please ensure you have submitted a Support case (per your institution's escalation process) so Canvas Support can adequately gauge the overall customer impact and prioritize appropriately.

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