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How do we see color?
Quick answer
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.
Step by step
- Cone cells in the eye detect light wavelengths.
- Three cone types respond to red, green, and blue light.
- The brain mixes their signals into millions of colors.
- Color blindness occurs when a cone type is missing or weak.
People also ask
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.
Part of the guide: Everyday Science: Light, Heat & Matter →