Bees Can’t See Red
Although bees have extraordinary eyesight, designed to pinpoint flowers while in flight, they are unable to see the color red. What they lack in seeing red, they more than make up with being able to see blues, purples, and ultraviolet. Often flowers produce a bullseye formation (which humans cannot see) on their petals using ultraviolet light to help bees and other insects find nectar and pollen.
What Do Bees See?
Although the rendering of the last two pictures are not true ultraviolet light, the whites and color have been dramatically increased to give a small sense of how bees see flowers.