What color of sunlight plants use for photosynthesis?

Carotenoids are a group of accessory pigments which occur in all photosynthetic organisms. They contain about forty carbon atoms, often without oxygen atoms and are fat soluble. They are chemically unrelated to chlorophyll and consist of rings connected by long chains of carbon atoms. They absorb light maximally at wavelengths between 460 and 550 nm and are therefore yellow, red or orange in colour as they reflect the wavelengths in this part of the spectrum. Carotenoids are found in all photosynthetic organisms.