Beyond, purple-shaded mountains rise from the deep blue mist like ships floating on water.

BBC: A tranquil slice of Tanzania

He followed the river upstream through the flooded bowl of the foothills, swollen with April rain, sleeping in empty riverboats while the sun, pale in the blue mist of the river, grew dimmer.

NEWYORKER: The Tiger��s Wife

In "Woman at the Piano" (1875-76), Renoir subsumes his subject in a blue-white mist defined only by a dark ribbon.

WSJ: A Rustling Theater of the Self | Impressionism, Fashion, and Modernity | Metropolitan Museum of Art | By Laura Jacobs