The term yellow-orange colour can be described by two crossword solutions: OCHRE (5 letters) and SAFFRON (7 letters). OCHRE is a natural earth pigment which ranges in colour from yellow to brown. It has been used since prehistoric times for cave paintings and other artworks. SAFFRON is a spice derived from the flower of the Crocus sativus plant, which is native to Southwest Asia. It is also used as a dye and has a distinctive yellow-orange hue.