product of wavelenght and temperature is cons.........then why is red colour more hot than blue?????

what made u think red color is hotter than blue?Do you know that there are blue stars and red stars? Hotter stars are blue where as cold stars are red in colour.U must be statisfied by observing that tip(near the wick)of a candle is blue in color.Observe that the flame of a gas stove is also blue in color.