Alison Barrett

<p>Take Notice lets you add one or more notice boxes across your entire site. For each notice, you can customize the following:</p>
<ul>
<li>Whether to appear on all posts (of any post type)</li>
<li>Whether to appear on specific posts (of any post type)</li>
<li>Whether to appear on posts with certain terms (of any taxonomy)</li>
<li>Where to appear in the post (above or below the content)</li>
<li>Color of notice box (custom colors or preset palettes)</li>
<li>Whether to display the notice title with its content</li>
</ul>
<p>Notices are a custom post type, so they can be managed and edited just like posts. You can add more than one notice at a time, and customize the above settings separately for each one. (See Screenshots for an example.)</p>


Take Notice

Add notices to all of your posts & pages at once. Customize where and how they appear.

Webliberty

<p>Use the Simple Note plugin to write informative and warning notes, notes about errors or success, as well as quotes in colored blocks.</p>
<h3>How to use</h3>
<p>Search beautiful colored blocks in Common blocks category and insert into the content.</p>
<h3>Translations</h3>
<p>You can translate Simple Note on <a href="https://translate.wordpress.org/projects/wp-plugins/simple-note" rel="nofollow ugc"><strong>translate.wordpress.org</strong></a>.</p>


Simple Note

The plugin allows you to create colored text notes in the new block editor.

Take Notice vs Simple Note