How do I match my project colours to a screen Capture pasted into Photoshop?

I'm a new Unity user and I noticed that the colours in my project seemed a little washed out. When I made a screen capture of the running PC build (which looked the same as the Editor - 2020.3.0f1) and pasted into Photoshop the colours were more vibrant. I compared the RBG values of the background and they are identical in the Editor and in Photoshop. I'm using the Solid Color background on the camera (default 49, 77, 121). I tried changing the Project Settings Colour Space to Linear as I have seen mentioned in other posts, but this just made everything slightly darker. I also made sure the Photoshop colour space was sRGB. The attached photo shows the photoshop window (right) lying over the build and hopefully you can see that the blues are different. I also reproduced this by just starting a new project with a default Sample Scene and changing the Camera background to Solid Color. I'd really like to know what's going on here. Any help appreciated, thanks.