Sorry, I'm not sure if those are the right terms. So, here is an example.
Let's say I want to add blue to this design:
How do I pick a blue that matches the existing mood/temperature?
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Being a composition that mostly uses warm colors, using the broken color schemes of this answer, after locating each color or the approximate one, you can easily find the complementary that would correspond to the cold color or blue keeping the same value.