Use contrasts and light colors that make rooms look bigger
In order to make a room look bigger it is useful to use the optical illusion. It is well known that light paint colors make a room look bigger and brighter. Light and bright walls are more reflective, making a space feel open and airy. It helps maximize natural light’s effect. Dark shades tend to absorb light, making rooms feel smaller.
Another way to maximize the size of your room is by using the accent walls to make a room look bigger. Accent walls add to the decorative space in color without being too overpowering.
Talking about the colors, for an optimum effect go with soft tones like off-white, beiges, light grey, blues, and greens.
Choose colors that are in the same family, and use tone-on-tone woven fabrics, textured wall finishes, and tonal drapery fabrics. Cool colors and delicate warm colors on most surfaces give a small room a more open look.
If you have a low ceiling a good trick is to use the same paint color for walls and ceiling. As you do not see exactly in this way where is the end of the walls it will create the look of higher walls. The optical illusion in this case is created by connecting the walls and the ceiling into one space.