Images fading or getting blurred on my wordpress site

For the first and third images, I don’t see any blurring or fading, Aside from size, they look the same to me on your site as they do here.

The second image has a gradient overlay applied to it that makes it appear faded until one hovers over the box, then the image brightens. This is a “feature” of your theme. It’s still a bit blurry though because the displayed size is larger than the image’s intrinsic size. It’s current intrinsic size is 300px wide, it should be at least 361px wide to display without blurriness.