Picking secondary colors:

The 180°±20° strategy hue technique:

There's a common pattern with brands that have a cool and a warm brand colour, the two colours are usually 160 - 180 degrees apart in hue.

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https://s3-us-west-2.amazonaws.com/secure.notion-static.com/13f1f701-ccde-4320-ba4e-a355692f73a6/Untitled

Airbnb

https://s3-us-west-2.amazonaws.com/secure.notion-static.com/7465e813-4e8f-416e-a20f-577fd3919a23/Untitled

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