The Color of the Sun is just right to support photosynthesis

"Photosynthesis is the process of converting light energy to chemical energy and storing it in the bonds of sugar. This process occurs in plants and some algae (Kingdom Protista). Plants need only light energy, CO2, and H2O to make sugar. The process of photosynthesis takes place in the chloroplasts, specifically using chlorophyll, the green pigment involved in photosynthesis.

Chlorophyll looks green because it absorbs red and blue light, making these colors unavailable to be seen by our eyes. It is the green light which is NOT absorbed that finally reaches our eyes, making chlorophyll appear green. However, it is the energy from the red and blue light that are absorbed that is, thereby, able to be used to do photosynthesis. The green light we can see is not/cannot be absorbed by the plant, and thus cannot be used to do photosynthesis.

The overall chemical reaction involved in photosynthesis is: 6CO2 + 6H2O (+ light energy) C6H12O6 + 6O2. This is the source of the O2 we breathe."

Read more about photosynthesis here

Sun's Color as Slightly More Red?

• If the sun were slightly more red, there would be insufficient photosynthetic response to produce enough oxygen to sustain life.

Sun's Color as Slightly More Blue?

• If the sun were slightly more blue, there would be insufficient photosynthetic response to produce enough oxygen to sustain life.

The Sun's color is just right to support photosynthesis - which is necessary to support life!