It’s called a mesh gradient and there are some generators for it if you want to take an easy route. For example https://meshgradient.com/. Source: about 1 year ago

If you want a bit more control and want to set your own colours, you can try meshgradient.com. It's free and the final image is exported as a high-resolution PNG. Source: over 1 year ago

You can download gradients, make them yourself with design software or gradient generators, and then animate them using basic CSS—Partiful uses a 12 second linear animation that basically scrolls a static gradient image. Source: over 1 year ago

Mesh gradient - I use this site to create the CSS needed https://meshgradient.com/. Source: over 1 year ago

If you are like me and struggle with finding an aesthetic cover for your Notion, I recommend you try out Mesh Gradients, the aesthetic is sooo good ;). Source: almost 2 years ago

Pattern Monster: A simple online pattern generator to create repeatable SVG patterns. Perfect for website backgrounds, apparel, branding, packaging design and more. - Source: dev.to / 2 months ago

SVG Patterns (if it counts as illustration:) https://pattern.monster/. Source: about 1 year ago

For the back of the card I'll use and SVG pattern, feel free to use the one you like the most from Pattern Monster. Also center the background image with background-position, and make it cover the full card by adding background-size: cover;. - Source: dev.to / over 1 year ago

I'd like to put together a POC to show some possible solutions. I know there are some tools out there such as https://pattern.monster/ and https://haikei.app/ which can generate images, but ideally this would be a library or at least an API I can hook into, so admins can just create templates in our admin application without having to go to an external site and manually knock a thumbnail up. Although not required,... Source: over 1 year ago

Bonus points for adding a custom background - pattern.monster is a must-use, in my personal, humble opinion. Source: almost 2 years ago