I've seen plenty of tutorials on the use of the Image > Adjustments > Replace Color... tool and in all of these tutorials, they will simply slide the hue slider to a color they wish to change to. I know that in the replacement section, a user can click the color box and choose a color from the swatches, even copy and pasting a specific hex code value. This is great for web dev work where I need a precise hex color for an image. Problem is, this doesn't work. It seems to blend the new color with the existing one. What I find myself doing is more of an iterative process then: I'll use the eye-dropper tool on this blended color, then repeat the Replace Color steps again and again until I get something close to my intended new color. There has to be a better way. Is this the wrong tool to use for my use case? Any pointers would be greatly appreciated.
There has to be a better way. Is this the wrong tool to use for my use case?
In my opinion it is a dilettante’s tool to begin with because it is destructive.
I would recommend you create a Selection instead (with Select > Color Range or any of the Selection Tools) and create a (Solid Color) Layer with that.
Is this the wrong tool to use for my use case?
Yes, it is. The tool works based on figuring in various properties like luminance, not replacing an absolute color. As already mentioned, create selections instead or use things liek the gradient map adjustment layer type to colorize items.
Thanks guys, I'll go the selection approach then.