How to get image colors closter together?

[Acoustic]

To preface, I am colorblind. So many colors blend together for me, so I need some assistance on this. Working on a terrain and I have 2 different sets of textures, one far away and one close. They both need to be really similar in color. I created a palette from one and applied it to the other, but I am not sure if they are still close enough. If someone could get them closer (or tell me that they are as close as they'll get, as I am not sure) and tell me what steps you took, so I can replicate on the other textures. Or any general advice, as well. Thanks.

https://imgur.com/a/l3Xq2co

Two images as example.