What is it that makes your form of perception more real than how a how a computer perceives something? You are aware that the world your perceive isn't the world that exists objectively? Red is only red because some tasty berries in the jungle were red and there just happens to be the right chemical for transducing a very specific frequency of light into a digital signal.

The logical idea of the color red? A frequency of electromagnetic radiation between X nanometers and Y nanometers.

From there, your brain says "related to the leaves changing colors in the fall, ripe strawberries" etc...