Color - Wikipedia

Color is the physiological perception of light wavelengths (approximately 390 to 700 nm) processed by the brain through the activation of specialized cone cells in the eye.

Key Insights

• Biological Basis: Human color vision is primarily trichromatic, relying on three types of cone cells to interpret spectral sensitivity; however, perception is subjective and varies across species and individuals based on light absorption and neurological processing.
• Physical Properties: While light sources emit specific power spectra, color is not an inherent property of matter but a result of how objects reflect, emit, or transmit electromagnetic radiation.
• Standardization and Models: Color spaces—such as RGB for additive light (screens) and CMYK for subtractive pigments (print)—provide mathematical frameworks to ensure precise color reproduction across different media.
• Spectral vs. Complex Colors: "Spectral colors" are monochromatic light of a single wavelength (e.g., the rainbow), whereas most perceived colors are complex mixtures characterized by hue, saturation (purity), and lightness.
• Cultural and Artistic Frameworks: Color theory governs the aesthetic harmony of colors (primary, secondary, and tertiary), while linguistic and cultural factors dictate how different societies categorize and name segments of the visible spectrum.