Match the pattern
Look at what patterns you are using for the furniture or accents and try to match it. This can create contrast and people will also notice the effect you are trying to pull off which can create some sophistication.
Think about the season
Drawing inspiration from the seasons and surroundings can emphasize the feeling associated wit that season. So whites, light blues and bright yellows make things feel bright and open and work well in summer.
Use many hues of the same color
pairing a paint color and a material with the same hue can really make a dramatic effect.
Get creative with accessories
emphasize the room color by using accessories. I love accessories because you can really add perfect slashes of color where you need them.
If you do this right this can create a fun and unique dynamic.