Designing for aging eyes in the grocery aisle
The average grocery shopper is older than most designers assume, and age-related vision changes — reduced contrast sensitivity, yellowing of the lens, and slower focus adjustment — directly affect how packaging colors are perceived. What looks crisp on a design monitor under controlled lighting may become unreadable under the harsh fluorescents of a supermarket. Use a minimum 5:1 contrast ratio for all body text on packaging, and test your color combinations with a yellow-shift simulation to approximate how aging lenses alter perception. Stone and Teal is particularly effective here because its palette avoids the low-contrast pastel trap that premium food brands often fall into.