Fundamentals of Color Theory and Color Systems

This article introduces the formation of color, traditional and digital color systems, and their commercial applications.

Light and Color : Light is a physical phenomenon; the Sun provides the spectrum of colors (red, orange, yellow, green, cyan, blue, violet). Newton’s theory links light to color, distinguishing emission light (light emitted by a source) and reflected light (light reflected from objects).

Color Mixing : Two basic methods are described – additive mixing (RGB) where different colored lights combine to create new light, and subtractive mixing (CMY/K) where pigments combine to absorb wavelengths and produce new colors.

Traditional Color Systems : The article outlines classic artistic systems based on pigments, emphasizing the three subjective attributes of color – hue (H), saturation (S), and lightness (L).

PCCS (Practical Color Coordinate System) : Developed in Japan (1964), PCCS organizes colors into 24 hues, 17 lightness levels, 10 purity grades, and 12 tones. It uses a hue‑tone matrix to simplify color selection and matching.

Digital Color Models : Detailed explanations of RGB (additive), CMYK (subtractive with black key), HSV/HSB (hue‑saturation‑value), and Lab (device‑independent L*a*b*) models, including their geometric representations and gamut characteristics.

Color Gamut Comparison : Lab covers the widest gamut (matching visible light), followed by RGB, then CMYK.

Commercial Applications – Pantone : The history of Pantone, its color‑matching system (PMS), the development of standardized color swatches, annual trend colors, brand‑specific colors (e.g., Tiffany blue, Coca‑Cola red), and color consulting services are discussed.

Conclusion : Color theory bridges natural phenomena and design practice, providing systematic tools for accurate color communication, brand identity, and market influence.