Distinct, until they start crossing them over, that is. Which is honestly, very ingenious.
But they did it in such a way that it was subtle while watching the movie, but different enough that you can still see a clear line between the two worlds.
You have the cool colors in the fantasy world, but because it’s so saturated that, for example, it washes out the natural colors of Ofelia’s skin, it feels like this scene belongs to the fantasy world. Whereas you have the warm colors in the real world, but it’s staged to be more naturalistic and not as saturated, that it comes off belonging to the real world.
And for that reason, I wish I had used this movie for TBD instead.