Learn the reasons
behind good color.
Evidence-led, practical guides to palettes, WCAG contrast, the 60–30–10 rule, RGB/HSL/OKLCH, and why screens render color differently.
How to create a useful color palette
A practical method for turning one starting color into a role-based, accessible palette for websites, products, posters, and brands.
Read guide →WCAG color contrast in practice
Understand 3:1, 4.5:1, and 7:1 contrast requirements, the large-text exception, non-text controls, gradients, transparency, and common testing mistakes.
Read guide →How to use the 60–30–10 color rule
Use the 60–30–10 color rule to establish hierarchy in rooms, interfaces, and graphics—without treating a flexible design heuristic as exact arithmetic.
Read guide →RGB, HSL, and OKLCH explained
Learn what RGB, HEX, HSL, and OKLCH represent, why equal numbers do not always look equal, and which format suits CSS, handoff, palettes, and accessible ramps.
Read guide →Why colors change across screens
Understand brightness, white point, display gamut, color profiles, browser management, ambient light, compression, and a practical workflow for more consistent color.
Read guide →Every guide should change the next decision.
PIQE does not mass-produce pages by swapping keywords. Guides combine primary standards, checkable examples, failure-prevention steps, tool limits, review dates, and a public corrections path.
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