One thing I love about illustration is the variety of styles a single illustrator does nowadays. Everyone is multi-task, and also does lots of cool stuff, like this American artist, Johnny Dombrowski. His work is pretty amazing.
This piece feels really calming to me. The solitary blue melds well with the soft black and white of the rest of the piece. Even the woman's mouth echoes the tranquil rhythm of the clouds above. The symmetry of the piece adds to the overall peaceful vibe.