A color harmony generator creates scientifically balanced color schemes based on color theory relationships on the color wheel. Enter any base color to instantly generate complementary, triadic, analogous, split-complementary, tetradic, and monochromatic palettes — with hex, RGB, and HSL values ready to copy.
Base Color
Color Wheel
Click to select a base hue
How to Use the Color Harmony Generator
Color theory gives designers a mathematical framework for choosing colors that work together. This free color harmony generator applies the six standard harmony relationships to any base color, producing professional palettes in seconds.
Step 1: Pick a Base Color
Use the color picker, type a hex value, or click the color wheel to set your base hue. The three HSL sliders let you fine-tune hue, saturation, and lightness independently. The HSL approach is especially powerful: adjusting just saturation creates tints and shades of the same color.
Step 2: Review All Harmony Types
Six harmony types are shown simultaneously: Complementary (180° opposite — high contrast), Triadic (120° apart — vibrant and balanced), Analogous (30° adjacent — cohesive), Split-complementary (150°/210° — contrast with variety), Tetradic (90° each — four-color balance), and Monochromatic (same hue, varied S/L — subtle elegance).
Step 3: Copy Individual Colors
Click any color swatch to copy its hex value to your clipboard. Each swatch shows the hex, RGB, and HSL values on hover. For CSS custom properties, use the HSL format since it's easiest to adjust programmatically.
Choosing the Right Harmony
Use complementary for high-impact CTAs and accents. Use analogous for backgrounds and gradients. Use triadic for playful, energetic brands. Use monochromatic for minimal, refined aesthetics. Split-complementary is ideal when you want contrast but complementary feels too harsh.
FAQ
Is this color harmony generator free?
Yes, completely free with no limits or account required. All color calculations happen locally in your browser — no data is sent anywhere.
What is color harmony?
Color harmony refers to combinations of colors that are visually pleasing together based on their relationships on the color wheel. Complementary colors sit opposite each other, creating high contrast. Analogous colors sit adjacent, creating low contrast and cohesion.
What is the difference between complementary and split-complementary?
Complementary uses the color directly opposite on the wheel (180 degrees away), creating maximum contrast. Split-complementary uses the two colors adjacent to the complement (150 and 210 degrees), reducing contrast while maintaining vibrancy — often more usable for design.
What is a triadic color scheme?
A triadic scheme uses three colors equally spaced around the color wheel (120 degrees apart). It creates a vibrant, balanced palette. One color is typically dominant while the other two serve as accents.
What are analogous colors?
Analogous colors are adjacent on the color wheel (30 degrees apart). They create harmonious, cohesive palettes because they share similar hues. They're commonly used in nature-inspired designs and monochromatic branding with subtle variation.
How do I use these colors in CSS?
Click the copy button on any color swatch to copy its hex value. You can paste the hex code directly into CSS color properties, Tailwind config, Figma, Sketch, or any design tool. HSL values are useful for CSS variables that need programmatic adjustment.
What is HSL color format?
HSL stands for Hue, Saturation, Lightness. Hue is the color angle (0-360 degrees on the color wheel). Saturation is the intensity (0% = gray, 100% = vivid). Lightness is the brightness (0% = black, 100% = white). HSL makes it easy to create color variations by adjusting just one parameter.