#13A5E9 · #FFFFFF
Four independent scores (read the one that fits your goal): Readability 35/100 (fail) · Harmony 94/100 (split-complementary) · Distinguishable 91/100 (easy to tell apart) · Match 0/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Cyan and White are very different (ΔE 58). They have near-opposite hues (161° apart) and their lightness is different, giving a clear light/dark split.
Cyan text on White: 2.77:1 (Fail); White text on Cyan: 2.77:1 (Fail). Neither meets AA at body size — nudging one color to #007EB5 clears it.
Split-complementary — split-complementary — a recognised, balanced pairing (harmony 94/100). This is about how they look together (clothing, interiors, branding), independent of text contrast.
Not at body size — the best direction is only 2.8:1, below the 4.5:1 minimum. Nudging one colour to #007EB5 clears AA.
Their CIE76 ΔE is about 58 — very different.
clearly different colours (ΔE 58).
Explore each color: Cyan #13A5E9 · White #FFFFFF · Shades: Cyan shades · White shades · Contrast checker →