05/01/2026
Did you know that babies are born almost colorblind? To detect color, the stimulus has to be very bright, highly saturated, and fairly large. Research shows that the red–green color system develops first, followed by the blue–yellow system about 4–8 weeks later. By around three months, infants become fully trichromatic. Even then, their ability to see less saturated, subtle colors is still limited—adult‑level color sensitivity doesn’t develop until late adolescence.