Color harmony is not subjective. It is geometric. The relationships between colors on the wheel determine whether a combination feels balanced, energetic, soothing, or jarring. Understanding these relationships helps you make intentional choices.
Complementary
Colors directly opposite each other on the wheel: blue and orange, red and green, purple and yellow. Complementary schemes create maximum contrast and visual energy. They are great for CTAs (a warm button on a cool background literally pops), but overuse creates visual fatigue.
Analogous
Colors adjacent on the wheel: blue, blue-green, and green. Analogous schemes feel harmonious, calm, and cohesive. They are the easiest to get right and the hardest to make exciting. Best for brands that want to feel sophisticated and unified rather than energetic.
Triadic
Three colors equally spaced on the wheel (120 degrees apart): red, blue, yellow or orange, green, purple. Triadic schemes are vibrant and balanced but challenging to execute. One color usually needs to dominate while the other two play supporting roles.
Split-Complementary
A base color plus the two colors adjacent to its complement. So instead of blue plus orange, you would use blue plus red-orange plus yellow-orange. This provides complementary contrast with less tension.
How PaletteRx Uses Harmony
PaletteRx analyzes the hue distribution of your palette and identifies the closest matching harmony type. It then suggests additional colors that would strengthen the detected scheme. The Smart Palette Suggestions panel uses these harmony calculations to recommend colors that are mathematically coherent with your existing palette.