I am working on a video for the web only. It is going to be on a webpage (never on broadcast), delivered as an h264 file. The web page background is hex code FFF1E5 (RGB 255, 241, 229). My background colour in After Effects is a solid with colour FFF1E5. How do I generate an 264 video file with a background precisely this colour. Not a little bit off. Exactly this colour. Because I've tried adjusting colour Working Space in Project Settings until I'm 0000FF in the face...
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My usual workflow is:
export as ProRes 422 (or 4444 - same problem) from After Effects CC2020
Convert to h264 in Media Encoder CC2020