6 (Yellow, White, Blue over Yellow on Gray) is a 1954 oil on canvas painting in a color field style by Latvian-born American artist Mark Rothko created in 1954.

After his experiments with mythological themes and Surrealism to express tragedy he turned to depicting irregular and painterly rectangular regions of color.

[1] The painting depicts three blurred blocks of yellow, white and blue opposed against a gray ground.

6 (Yellow, White, Blue over Yellow on Gray) belongs to Rothko’s late period when he for seven years painted in oil only on large canvases with vertical formats.

Very large-scale designs were used, in Rothko's words, to make the viewer feel "enveloped within" the painting.