If someone is interested in two.
Paint one room two colors.
If you choose to contrast the ceiling making it darker than the walls may create a dramatic effect.
The triad color.
Both of these colors can make your room look more coordinated.
Rules of painting a room with two colors color science 101.
Looking for more balance purple and white is good option.
I would use one of the colors as an accent on one wall.
Complementary and split complentary colors.
When selecting two colors for one room it is important to choose one that is a white or more neutral in color as not to compete or fight with the accent color.
A common two color strategy is to use contrasting colors to highlight the ceiling or the wall.
An accent wall is the perfect frame for a wall hung art collection or a single important piece.
Your room is already divided in two horizontally by the chair rail or the wainscoting.
You can try these complementary colors for your bedroom or living room.
Colorists often utilize a color wheel before selecting a multicolor design scheme and some paint.
Purple and white are a good complement.
It also depends on your bedding though.
If it is mainly the orange then you might want the pink on 3 and the orange as the accent.
Complementary colors provide strong contrasts that are visually striking.