The color red-orange is a dynamic hue that can be expressed in different terms. Some synonyms for red-orange include crimson, vermilion, scarlet, tangerine, peachy, and mandarin. Crimson is a darker shade that is close to burgundy, while vermilion has a slightly redder tone. Scarlet is a brighter and more intense shade of red-orange that resembles the color of a fresh tomato. Tangerine and mandarin have a more yellowish-orange quality while peachy has, as the name suggests, a softer and more delicate hue. Regardless of the term used, red-orange is a versatile color that can evoke feelings of warmth, energy, and passion.