Chloroplasts contain pigment molecules such as chlorophyll a, chlorophyll b, and carotenoids that absorb light at different wavelengths.

Chlorophyll pigments absorb mainly violet-blue and red light, and reflect green.

Carotenoids absorb mostly blue and green light, and reflect orange and yellow.

• What colors are absorbed by a substance that looks white?
  • None. A white substance absorbs no colors,and reflects all colors of the visible spectrum.