SUNSET HUES' (7 letters) The term 'Mellow Tones' can be summarized by two crossword solutions: 'PASTELS' (7 letters) and 'SUNSET HUES' (7 letters). PASTELS are a range of pale, soft colors, such as pink, blue, yellow, and green. They are often used in art and fashion to create a gentle, calming effect. 'SUNSET HUES' refers to the warm, vibrant colors that appear in the sky during a SUNSET, such as orange, red, and purple. Both of these terms can be used to describe the mellow tones of a peaceful, tranquil atmosphere.