Green is created through the combination of blue and yellow colors. In the context of additive color mixing, such as with light, green is created by combining equal parts of blue and yellow light. In subtractive color mixing, used in painting and printing, green is made by mixing yellow pigment with blue pigment.
In the RGB color model (used in digital screens), green is one of the primary colors. It has a specific value of 0 in the red channel and a value of 255 in the green channel, with 0 in the blue channel. This is why when you see pure green on a screen, it's bright and vibrant.
In nature, green is predominantly seen in plants and trees, where it comes from chlorophyll, a pigment that plays a critical role in photosynthesis. Chlorophyll absorbs sunlight and converts it into energy, giving plants their green color.