The phrase "cool blues" refers to a style of music, specifically a type of jazz that feels calm and relaxed. It often has a slow tempo and uses smooth musical techniques to create a cool and soothing atmosphere. Full definition
So for now half our bedroom is in cool blues and the other half is still gray like the sky outside. (mbzinteriors.com)
I prefer to decorate in warm tones and find cool blues and white just so stark. (theinspiredroom.net)
Honestly, the big black buffalo check works equally well in just about any season, so all I did was to switch out some of the deeper, darker colors for cool blues. (lindsayhillinteriors.com)