The Color Wheel
Understanding the color wheel is fundamental. Primary colors (red, blue, yellow) combine to form secondary and tertiary colors, creating a full spectrum for your designs.
Color Harmony
Complementary colors sit opposite on the wheel and create high contrast. Analogous colors sit adjacent and create harmony. Triadic combinations offer balance with vibrance.
Accessibility
Always check your color combinations for WCAG compliance. Aim for at least 4.5:1 contrast ratio for normal text and 3:1 for large text.