The triad color.
Paint one room two colors.
If it is mainly the orange then you might want the pink on 3 and the orange as the accent.
Complementary and split complentary colors.
You can try these complementary colors for your bedroom or living room.
Looking for more balance purple and white is good option.
I would use one of the colors as an accent on one wall.
It also depends on your bedding though.
An accent wall is the perfect frame for a wall hung art collection or a single important piece.
Rules of painting a room with two colors color science 101.
If someone is interested in two.
In this case the darker pink as otherwise the room might be too dark if 3 walls are the dark pink.
Chair rails and wainscoting.
Colorists often utilize a color wheel before selecting a multicolor design scheme and some paint.
How to paint a room with two different colors accent walls.
A common two color strategy is to use contrasting colors to highlight the ceiling or the wall.
Your room is already divided in two horizontally by the chair rail or the wainscoting.
Complementary colors provide strong contrasts that are visually striking.
Purple and white are a good complement.