A consistent color palette is the foundation of any design system. Starting from a single base color, you can derive a complete palette using color theory rules: complementary (180° opposite on the color wheel, high contrast), analogous (30-60° adjacent, harmonious feel), triadic (120° apart, vibrant and balanced), and monochromatic (same hue, varying saturation and lightness). Our picker generates these schemes and exports them as CSS custom properties (--primary-500: #1A73E8), ready to paste into your design system or Tailwind config.