by Joni Halabi on WordPress.org

The Color Palette block in the post editor, displaying the colors as stylized cards.
Important notice!
Due to a shift in my personal and professional priorities, I have decided to take a step back from development. As a result, this plugin is no longer being actively maintained. You are welcome to fork it and create your own updates. If you do so, please credit me as the original author. (I would also love to hear about this plugin’s new life!)
All the best, Joni.
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The Color Palette block displays a group of colors on your page. The block starts with 3 individual Color blocks, but you can add additional blocks or remove excess blocks as needed.
Give each color block a color using the selector in the Inspector Panel on the right-hand side of the editor, give your color a name, and you are done! If you need to use the same color palette on multiple pages or posts, simply save the Color Palette block with all of your colors as a reusable block through the editor.