Embodiments of this disclosure pertain to articles that exhibit scratch-resistance and improved optical properties. In some examples, the article exhibits a reflection or transmission color shift of about 2 or less, when viewed at an incident illumination angle in the range from about 20 degrees to about 60 degrees from normal under an illuminant and hardness of at least 14 GPa at an indentation depth of at least 100 nm from the surface of the article. In one or more embodiments, the articles include a substrate, and an optical film disposed on the substrate. The optical film includes a scratch-resistant layer and an optical interference layer. The optical interference layer may include one or more sub-layers that exhibit different refractive indices. In one example, the optical interference layer includes a first low refractive index sub-layer, a second a second high refractive index sub-layer, and an optional third sub-layer.