HOUSE BEAUTIFUL TEAM said that Colour wheels are formed from the three primary colours: blue, yellow and red. The secondaries: green, orange and purple are between them around the wheel.
The idea is that if you choose colours from opposite sides of the colour wheel, such as purple and yellow, you’ll get zingy combinations.
Try this with crocuses in spring: mix Crocus ‘Goldilocks’ and Crocus tommasinianus ‘Whitewell Purple’ for a lively scheme.
Colours next to each other on the wheel harmonise. Purple and blue, for example, creates a soothing look.
Lavenders, russian sage, alliums and catmint (nepeta) will give a nice range of purples – add a touch of red with knautia macedonica to keep it lively.