Science
How do we see color?
We see color because special cells in the eye, called cones, respond to different wavelengths of light — roughly red, green, and blue. The brain combines their signals into the full range of colors we perceive, from a single flower to a sunset.
See it in motion.
Watch a 2-minute animated lesson that shows exactly how color vision works.
Step by step
- 1Cone cells in the eye detect light wavelengths.
- 2Three cone types respond to red, green, and blue light.
- 3The brain mixes their signals into millions of colors.
- 4Color blindness occurs when a cone type is missing or weak.
Frequently asked questions
- How do we see color?
- Cone cells in the eye respond to red, green, and blue light, and the brain blends those signals into color.
- Why are there three types of cones?
- They cover overlapping ranges of light, letting the brain mix them into the full spectrum we see.
- What causes color blindness?
- A missing or faulty cone type, making certain colors hard to tell apart.