There was an image in Photoshop, with a P3 embedded color profile.
The image was “Saved As” a JPG (not for web), embedding the P3 color profile (the image itself, if AirDropped to the iPad would display in full color, correctly).
That image was imported in a Unity URP project, with Low, Mid and High Quality profiles all featuring HDR, and Display P3 color space put on top of sRGB in Project Settings for Color Profile.
The image was set as a Sprite, with RGBA32 format (tried Automatic first, then RGB24 second).
The project was built for iOS, and on the iPad’s screen the colors continue to show washed out.
WTF I have to do to get the colors to render as they are supposed to?!?!?!?!? ARGGGGGG