CSS color-mix() Chrome for Developers
Mix colors, in any of the supported color spaces, right from your CSS.
Authoring colors with DevTools #DevToolsTips
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New functions, gradients, and hues in CSS colors (Level 4)
MDN Blog
Simplify Your Color Palette With CSS Color-Mix() — Smashing Magazine
High Definition CSS Color Guide, CSS and UI
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High Definition CSS Color Guide, CSS and UI