Setting color parameter always sets to 191

[drowsy wolf]

I have a problem where whenever I set the color of a parameter in my shader graph it gets set to 191. Anyone else had this problem?

[ashen peak]

It's not a good idea to use color picker on the results. The input color would go through various transformations, like srgb-linear conversion, gamma correction, possibly, eye adaptation/exposure, etc..
Just to confirm, does the value change if you modify the input color?