It can be repeated in stronger tones in furniture or in small and unimportant furnishings of the room, but the wall tone should never be deeper than medium in strength, at the risk of having all the light absorbed by the colour, and of losing a sense of atmosphere in the room.
There is another reason for this, which is that many colours are agreeable, even to their lovers, only in light tones.

The moment they get below medium they become insistent, and make themselves of too much importance.

In truth colour has qualities which are almost personal, and is well worth studying in all its peculiarities, because of its power to affect our happiness.
The principles of proper use of colour in house interiors are not difficult to master.

It is unthinking, unreflective action which makes so many unrestful interiors of homes.

The creator of a home should consider, in the first place, that it is a matter as important as climate, and as difficult to get away from, and that the first shades of colour used in a room upon walls or ceiling, must govern everything else that enters in the way of furnishing; that the colour of walls prescribes that which must be used in floors, curtains, and furniture.
Not that these must necessarily be of the same tint as walls, but that wall-tints must govern the choice.
All this makes it necessary to take first steps carefully, to select for each room the colour which will best suit the taste, feeling, or bias of the occupant, always considering the exposure of the room and the use of it.
After the relation of colour to light is established--with personal preferences duly taken into account--the next law is that of gradation.
The strongest, and generally the purest, tones of colour belong naturally at the base, and the floor of a room means the base upon which the scheme of decoration is to be built.
The carpet, or floor covering, should carry the strongest tones.