I was suffering from the same issue with an HP LaserJet:
- image capture to tiff works.
- Hp Easy Scan works
- Adobe Acrobat in B&W works
- scan tool shows preview, but then when scanning in color complains about color format
- Go to System Preferences >> printers&scanners and remove the printer.
- Go to the HP website to download drivers. The link here happens to be for my printer.. but it may differ for other models (although I doubt it, the software looks like it's intended for all HP printers).
- DO NOT GO with the recommended "HP Smart App". Instead, look under "drivers" and download "Install HP Easy Start".
- When running the above it will identify your printer, and prompt you to install the latest HP Smart Software.... AGAIN DO NOT DO THAT... Instead click on the red X to close the window. Doing so will open a pop-up giving you the option of "Skip to Software Download".
- Select both "Essential Software" and "HP Easy Scan", and hit Install. This should finally update your driver correctly.
- Run Adobe Acrobat X or whatever, and try to scan (it worked for me).
Yes, all these instructions actually do is update your driver (pretty much the recommendation Adobe gives, but HP makes that VERY VERY hard as they keep pushing you to use the HP Smart app instead).
once again try to route you to the HP Smart App. Skip and install the old stuff instead: