@aeva I don't have that problem. Just be aware that Blender color grading settings are in several places at the same time. The main one is in the Render tab, while the Output tab has another one with a switch to use it or not use it. Then each image you load can have its own color space (which is sRGB by default for SDR images, I think). You should be able to test this by just rendering some texture on a plane, image connected to the output directly or through an "emission" shader node. Or a plain RGB value to see if it matches the expected gamma-corrected value.