Green is primarily made by mixing the two primary colors blue and yellow. The specific shade of green depends on the ratio and tones of blue and yellow used-more yellow results in a warmer green, while more blue yields a cooler green
. In terms of light, green corresponds to wavelengths roughly between 495 and 570 nanometers in the visible spectrum
. In additive color systems like RGB (used in screens), green is a primary color itself, combined with red and blue to create other colors
. In nature, green is largely due to chlorophyll, the pigment in plants that absorbs red and blue light but reflects green light, making plants appear green
. Many animals also appear green due to pigments or structural coloration that reflects green wavelengths for camouflage
. Historically and artistically, green pigments have been derived from various minerals and synthetic compounds, such as chromium oxide, cobalt green, and phthalocyanine green, which are used in paints and dyes
Summary:
- Mixing colors: Blue + Yellow = Green (secondary color)
- Light wavelength: 495–570 nm in visible spectrum
- Natural source: Chlorophyll in plants reflects green light
- Pigments: Various mineral and synthetic compounds (e.g., chromium oxide, phthalocyanine green)
This explains both the physical and artistic basis for what makes green green.
