Colour Harmony Compatibility Checker
Enter two or three colours and instantly see which classic colour harmony type they match, such as complementary, analogous or triadic.
Enter Your Colours
Result
How to Use This Tool
Enter two colours, or three if you like, using the pickers or by typing hex codes. The tool works out the hue relationship between your colours and tells you which classic colour harmony type they most closely match.
Example
A deep blue (#2547A0) and a warm gold (#F6C445) sit roughly opposite each other on the colour wheel, so this tool identifies them as a complementary pairing, a combination known for strong, energetic contrast.
Colour Harmony Types Explained
Complementary colours sit opposite each other on the colour wheel and create strong contrast. Analogous colours sit close together and feel calm and cohesive. Triadic combinations use three colours spaced evenly around the wheel for a vibrant, balanced look.
Using This Tool With Your Palette
Check any two or three colours from a painting, brand palette or craft project to understand how they relate, then use that insight to decide whether to lean into the contrast or soften it with a shared neutral.
Frequently Asked Questions
What does this tool do?
It analyses two or three colours you enter and identifies which classic colour harmony type they most closely match.
What is a complementary colour scheme?
It is a pairing of two colours that sit roughly opposite each other on the colour wheel, creating strong visual contrast.
What is an analogous colour scheme?
It is a group of colours that sit close together on the colour wheel, creating a calm and cohesive look.
What is a triadic colour scheme?
It is a combination of three colours spaced roughly evenly around the colour wheel, giving a vibrant but balanced result.
Do I need to enter exactly three colours?
No, the third colour field is optional. You can check just two colours or all three.
Is a colour combination bad if it does not match a named harmony?
Not at all. Classic harmony types are a helpful guide, but many successful palettes do not fit a single named category.
How is the harmony type calculated?
It converts each colour to HSL and compares the hue angles between your chosen colours against standard colour wheel relationships.
Is this tool free to use?
Yes, this tool is completely free to use with no sign-up required.
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Explore Painting KitsHarmony type is determined using standard HSL hue-angle relationships on the colour wheel. Real-world visual harmony also depends on saturation, value and context, so treat this as a helpful guide rather than an absolute rule.