光泽度(glossness )用数字表示的物体表面接近镜面的程度，半光漆主要是漆膜的光泽而言。一般来说半光漆的光泽度应在40-60之间（60度角）。
Glossness is used to discribe how much is the surface of the material close to mirror. Semigloss paint is named by the glossness of the paint film. Generally, the glossness of the semigloss paint should be between 40 to 60 degree (60 degree angle).