Change Section Background Color upon Image Hover

Hello! I am re-doing my website and I'm looking to customize a section on my homepage. I want the section background color to change to a custom HEX code upon image hover, for the three projects shown to make the background color more on brand. This site right here is a great reference as to what I'm looking for:

https://hoodzpahdesign.com/

Here's a screenshot of the new section:

Thank you in advance! 

You can see this thread.