Pink, red, blue or light purple discoloration sometimes occurs in home canned apples, cauliflower, pears, peaches or beets.
Keep all produce cool after harvest. When using the hot pack method, do not overcook or heat to too high a temperatures. Excessive heat changes natural food pigments. Use correct processing methods and time to reduce discoloration.
If the fruit grew in dry weather, it often turns pink and cannot be prevented.
While the color doesn’t look right, the pears are safe to eat.