Color psychology gets oversimplified into lists like "blue means trust, red means urgency," which isn't wrong exactly, but it's far less reliable than context, contrast, and brand consistency.
Contrast and readability affect usability directly, regardless of which specific colors are chosen.
Consistency with your existing brand builds more trust over time than any individual color's supposed psychological effect.
Call-to-action buttons benefit from color that clearly stands out from the rest of the page, more than any specific "best" color.
Cultural and contextual associations do matter, meaning color choices should account for your actual audience, not generic psychology claims.
Choose a palette that reflects your brand consistently, then test specific elements (like CTA buttons) for what actually performs with your real audience.
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