When painting your home, take cues from color psychology
Blue, which often ranks at the top of surveys exploring “favorite” colors, has been shown to slow pulse rate and lower body temperature.
The implications for interior painting: blue is a terrific color choice for bedrooms, according to Zimmer. But since blue works as an appetite suppressant — perhaps because there are few blue foods — it is not the best option for a dining room … unless you’re on a diet.
Ceiling: soft shades are cool and heavenly, dark hues give the illusion of the ceiling advancing.
Walls: pale to mid-tone shades are soothing, darker hues provide a dramatic backdrop.
Floors: movement (darker hues) to effortless movement (lighter hues).
Blue has a tendency to be cold and bleak if applied to large areas. Medium or deep tones are appropriate in incidental areas. Pale blue is refracted sharply by the lens of the eye, therefore it tends to cast a haze over details and objects in the environment.