The present disclosure is drawn to an inks, printed articles, and related methods. In one example, the a neutral gray reflective ink can include an aqueous liquid vehicle, iron oxide reflective particles having an average particle size from 3 nm to 180 nm dispersed in the aqueous liquid vehicle, and a dye system solvated in the aqueous liquid vehicle. The iron oxide particles and the dye system are present at relative concentrations to provide a reflective ink that is neutral gray.