I made my „Pastellinos“, because I was looking for a very quick and easy way to color a scene with matching pastel colors. The 15 color tones palettes a common harmony combinations. 

A pastel color palette typically consists of soft, muted tones that are less saturated than their more vibrant counterparts. These colors are often inspired by the lighter hues found in nature, such as delicate pinks, blues, greens, and yellows. Pastel shades are known for their calming and gentle appearance, making them popular choices in various design applications, from fashion to interior decor.

Those 75 material shaders are very simple built & easy to adjust. All are delivered with the same adjustments and a small „Group Node“ for the top adjustments. But all of them have one a different main color, the object name is identical to the hex code of the color. 

The five materials in one row are fitting together in the color scheme - as you can see on the color pallets. All materials are marked as asset for easy access in Blender 3.0 ++ new Asset Browser.

You´ll find a small demo blend file to download as well (last screenshot).