Yellowing is the off-color tint that older paints, especially oil-based ones, develop with age, often in rooms with little light. That’s why choosing the right modern paint formulation is important for keeping white and light colors looking clean over time.
Oil-based whites yellow fastest in dark closets and low-light rooms where sunlight never bleaches the tint back out. When painting white in spaces like that, a quality acrylic white stays truer than oil-based alternatives are able to achieve.