According to the Hunter Education Association, Hunter Orange is the shading “having a dominant wavelength between 595 and 605 nanometers, a luminance factor of not less than 40 percent and an excitation purity of not less than 85 percent.”

the sweet orange was unknown until the late 15th century or the beginnings of the 16th century, when Italian and Portuguese merchants brought orange trees into the Mediterranean area

Portuguese traders brought the citrus fruit from India to Europe.