Choose a harmony type, or a mood you want your design to convey, to see a ready-made example palette with the reasoning behind it. This is a reference guide with fixed examples, not a calculator for your own color.
Perception & psychology:
Works well for:
What each harmony type means on the color wheel
A color wheel arranges hues by angle, and every harmony type is a rule about which angles to combine. Complementary picks two hues 180 degrees apart for the strongest contrast. Analogous picks hues around 30 degrees apart, sitting next to each other for a smooth, cohesive look. Triadic spaces three hues 120 degrees apart for variety while keeping some of the contrast of a complementary pair. Split-complementary takes a base hue plus the two neighbours of its opposite, at roughly 150 and 210 degrees, for contrast without the harshest clash. Tetradic combines two complementary pairs, 90 degrees apart, for a richer but busier set. Monochromatic stays at a single angle and varies only lightness and saturation. The examples above are fixed on purpose, since the angle is what defines each harmony, not any specific hex value.
Color associations across cultures
Color reads differently depending on where an audience is from, not just what the wheel says. In the UK and across most of Europe, red is tied to warning signs, urgency and stop signals, while in Chinese culture the same hue is strongly linked to luck, celebration and good fortune, which is why it dominates festive branding there rather than caution notices. White carries associations of purity and bridal wear in the UK, but is a mourning colour in parts of East and South Asia, so a "clean, minimal" white-based palette does not travel with the same meaning everywhere. Purple has kept a historic association with royalty and luxury in British and wider European branding, a leftover from when the dye was rare and expensive to produce. None of this changes the geometry of a harmony, but it should shape which hues you actually pick for a given audience.
How this differs from a palette calculator
This page is a reference guide: the palettes shown are fixed examples chosen to illustrate each harmony type, not calculated from any color you enter. If you already have a brand color, a logo, or a specific hex code and want to generate its complementary, analogous, triadic, split-complementary or tetradic variants live, use the Color Palette Generator instead, which takes your own hex value as input and computes the matching hues on the spot.
Limits: screens, light and color vision differ
The same hex code can look different on two screens depending on calibration, brightness and the ambient light in the room, so a harmony that looks balanced on one display may look uneven on another. Around 8% of men, and a much smaller share of women, have some form of color vision deficiency, most often affecting red-green distinction, which can make a complementary or triadic scheme far less legible to them than to the rest of an audience. Always check a real design in the actual conditions it will be viewed in, and pair color with shape, text or icons rather than color alone for anything that needs to be understood by everyone.