why material is darker then in shader graph? unity 2019.3 UniversalRP

hi
i am new to unity
i use shader graph make a color material
however,the problem is
i attach this material to a quad,the color is so dark then it should be in shader graph
you can see the picture below


how can i fix this problem
i thought ,the problem may in the light setting
so i go to windows--rendering---lighting settings



i do not know which parameter is the cause of this problem

please help me!!

 

Scene lighting does effect the material, but it also looks like you're using post processing (tonemapping + color grading?), which also affects the final image. Nothing wrong with that, but it explains why it looks slightly different.

 

thanks StaggartCreations
yes the problem is post processing (tonemapping)
after i deactive it
every thing the color become more satuated
no more gray

 

Go to windows>Rendering>lighting setting>and near auto generate option you will see Generate lighting option just click on it