About Harmonic Color Palette Generator
Interactive color palette and swatch generator for web designers, digital artists, and frontend developers. Generate aesthetic 5-swatch color schemes with mathematical harmony rules: Complementary, Triadic, Tetradic, Analogous, and Monochromatic. Lock favorite colors and re-roll unlocked slots. Includes HEX, RGB, and HSL conversions, WCAG 2.1 contrast ratio ratings on white and black, and CSS variable export.
Key Capabilities & Features
- 5 color harmony models: Complementary, Triadic (120°), Tetradic, Analogous, and Monochromatic
- Individual swatch lock mechanism (lock your brand color and roll harmonizing accents)
- WCAG 2.1 relative luminance and contrast ratio calculations against white and black
- Color format outputs: HEX, RGB, and HSL
- 1-click export as CSS custom properties (--color-1 through --color-5)
How to Use Harmonic Color Palette Generator
Select Harmony Model
Choose Dynamic Random, Complementary, Triadic, or Analogous.
Roll Palettes
Click Roll Palettes to generate fresh color harmonies.
Lock Favorites
Click the padlock icon on swatches you want to preserve.
Export Colors
Copy individual HEX codes or grab the complete CSS variables stylesheet.
Privacy & In-Browser Execution Guarantee
100% Client-Side. Colors are computed locally using standard color science math.
Frequently Asked Questions
What is a complementary color harmony?
Complementary colors sit directly opposite each other on the 360° color wheel (180° apart), providing maximum visual contrast and high impact.
What is WCAG contrast ratio?
WCAG contrast measures the difference in relative luminance between foreground and background. A ratio of 4.5:1 is required for normal text (AA standard).
How are color harmonies and WCAG contrast ratios computed?
Harmonies (complementary, triadic, tetradic, analogous, monochromatic) are mathematically computed in HSL cylindrical color space. Contrast ratios are calculated against pure white (#FFFFFF) and black (#000000) using WCAG 2.1 relative luminance formulas.