How our eyes respond to colour!

Observed colour
Wavelength (nm)
Cone response
S
M
L

What to do!

  • Slide the yellow arrow to explore how our eyes respond to colours.

  • Our eyes have three cones, S, M, and L. These respond to different wavelengths of light.

  • Our brain combines these signals to create an observed colour.

What’s happening?

  • Are there wavelengths of light that our eyes don’t respond to?

  • Is there a colour that excites only our M-cones?