Blog/October 12, 2025

Yumma CSS 3.5

Opacity variants for color utilities and small improvements to the CLI it's everything Yumma CSS 3.5 is all about.

Yumma CSS 3.5

This update shouldn't be difficult to upgrade, but you may want to check out the release notes before upgrading.


First-party engine

That's right, we decided to create our own first-party engine for Yumma CSS. This shouldn't have any impact on your projects, but it's a big deal for us internally.

This change will allow us to extend Yumma CSS to feature projects like Yumma CSS Play and more. Now of course this is a very specific change, but it's a big one for us internally.


Opacity color variants

You can now use color utility variants to specifically apply opacity to single utilities.

<div class="d-g g-4 gtc-4">
<div class="bg-indigo/5 b-1 bc-indigo-6/10 d-16 rad-1"></div>
<div class="bg-indigo/10 b-1 bc-indigo-7/10 d-16 rad-1"></div>
<div class="bg-indigo/25 b-1 bc-indigo-8/10 d-16 rad-1"></div>
<div class="bg-indigo/50 b-1 bc-indigo-9/10 d-16 rad-1"></div>
</div>

Upgrade

You can get the latest version of Yumma CSS from npm:

Terminal window
pnpm up yummacss