For designers who need to talk to numbers people...
Color is emotion.
For designers, this is clear.
But for a CFO, one thing counts above all: the return on investment.
So: Don't explain color with "mood" or "aesthetics", explain with effect.
For example:
"The new color palette increases brand recognition – this saves advertising costs in the medium term."
Or:
"A higher contrast ensures better readability, which reduces the bounce rate by X %."
Turn color into a business decision.
Then the CFO not only listens – but also says: Go.