The color jonquil appears in literature not only as the name of a flower but also as a vivid hue that authors manipulate to evoke radiance and subtlety. In color recipes and descriptions it is treated as a refined yellow: for instance, its delicate balance is depicted by mixing white lead and chrome yellow with a hint of vermilion ([1]), while later works note “a touch of jonquil yellow” alongside dark chrome and silver tones ([2]). It is also employed as an adjective in visual portrayals—ranging from “a faded jonquil” in a poetic description ([3]) to being paired with other colors in items like gloves ([4]), textiles ([5], [6], [7], [8]), and even entire furnishings such as a sofa ([9]). Moreover, writers delve into its chromatic properties in practical formulations and mixing guides ([10], [11], [12]), confirming that jonquil, as a color, carries both aesthetic charm and technical nuance in literary expression ([13], [14], [15], [16]).