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Frequently asked questions

When should I use only two colors?
Business cards, merch, posters, and minimal logos often need a strong duo: one surface and one ink. Colorise Pro checks both directions — ink on surface and surface on ink.
What is reversible contrast?
Face and reverse: A on B and B on A. Print and cards flip often — Colorise Pro shows WCAG and APCA for both so neither side fails readability.
Can I start from my brand hex?
Yes. Set a primary color or open /pairs/duo?hex=2563EB — recommendations re-hue around that primary while keeping contrast discipline.