Distant blue

Quick answer：

The term 'Distant blue' can refer to various contexts. It could be a color, a phrase in a song or literature, or a scientific term. In color theory, distant blue is a shade that is perceived as being farther away. In music or literature, it might be a metaphor or poetic expression. In astronomy, 'distant blue' could refer to the color of stars that are cooler than the Sun. The context is needed for a more precise explanation.