Peter de Hoogh's lights are just strong enough to reveal the colours in a milder illumination.

In our picture the sunshine diffused by the yellow curtains mingles with the red of the woman's dress and creates a rich orange.

Little does she know how well her dress looks.

But it was only after incessant study of the way in which Rembrandt had mastered the whole range from light to dark, that Peter de Hoogh became able to paint as he did within his narrower scale, abridged at both extremes.
Begin with the room, then the passage, then the farther hall, then the highway open to the unseen sky above, then the house-front beyond it, and the hall beyond the lady in the neighbouring doorway; there are at least four distinct distances in this picture each differently lighted, and the several effects worked out with scrupulous painstaking fidelity.

It is worth your while, with your own eyes rather than with many words of mine, to search out on the original all these beautifully varied gradations.