Warm blues are not a myth, says designer Elaine Griffin. To find one -- and avoid a room that gives you the chills -- "look for a blue with lots of yellow undertones.": http://www.bhg.com/decorating/color/blue-paint-colors/?socsrc=bhgpin042814warmblue&page=9
Benjamin Moore Palladian blue said to be the most beautiful color as it changes with the angle of the light all day long. It is peaceful, flattering and not pastel. Its a grayed down, robin's egg blue.