How to change color based on color tables

[new]

Hello,

I have a image. The color over sea is bad. I try to replace it.

The colors over sea are something like (20,78,150), (31,94,160). I try to replace them with (15,31,176).

Can anyone tell me the best way to do this?

Thank you very much,

Zitian

[anthony]

The BEST way. mask out everything that is sea. color adjust to get the colors right than re-add them back into the original image.

Using a color replacement will either replace only one color, or replace a range of colors with a flat color. not good.