I could use a little guidance in colors and lighting in HDRP

I'm trying to replicate something like this:



For the ground, I create a material and color palette what's in the picture above, yet it doesn't look anything like the color in the picture.

Here is what my nice vibrant cube map looks like in photoshop:




And here is how it looks in-game:



I have no idea how to go from a to b in this regard. So any tips would be greatly appreciated. Even something to search to get started.