How to choose without inventing a color philosophy

Begin with the temperature already present in your brand and content. Cool interfaces often sit naturally on a blue-gray neutral; editorial pages may benefit from a restrained warm background. Keep the tint subtle enough that it supports reading instead of becoming the subject.

Then give surfaces separate roles. Your page background, content surface, raised card, and input do not need four wildly different colors. They need enough distinction to explain the interface.

Turn a palette into CSS variables