A toner includes binder of amorphous polymer material, such as an amorphous polyester material, and a crystalline polymer material, such as a crystalline polyester material, wherein the amorphous polymer material has an acid number that is greater than an acid number of the crystalline polymer material. Further, the toner may have a minimum fusing temperature of from about 75.degree. C. to about 150.degree. C. and a relative humidity sensitivity of from about 0.5 to about 10. A method of making toner particles is also indicated.