Low Ceilings? 3 Tricks to Make Them Seem Higher
When you want to create a sense of greater height in a room, consider these options:
Choose a light paint color for the walls, and consider painting trims and accents in the same color.
Give the illusion of high ceilings by bringing the ceiling paint down approximately 4” into the wall.
Paint vertical stripes on the wall using dark and light colors.
(Source: https://www.sherwin-williams.com/homeowners/color/color-advice/four-paint-myths)