#004348 · #FFFFFF
Four independent scores (read the one that fits your goal): Readability 86/100 (aaa) · Harmony 98/100 (complementary) · Distinguishable 100/100 (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.
Deep Vivid Cyan and White are very different (ΔE 77). They have near-opposite hues (176° apart) and their lightness is different, giving a clear light/dark split.
Deep Vivid Cyan text on White: 11.07:1 (AAA); White text on Deep Vivid Cyan: 11.07:1 (AAA). Both directions meet WCAG AA.
Complementary — complementary — a recognised, balanced pairing (harmony 98/100). This is about how they look together (clothing, interiors, branding), independent of text contrast.
Yes — 11.1:1, which meets WCAG AA.
Their CIE76 ΔE is about 77 — very different.
clearly different colours (ΔE 77).
Explore each color: Deep Vivid Cyan #004348 · White #FFFFFF · Shades: Deep Vivid Cyan shades · White shades · Contrast checker →