#09AEC9 · #53A3E1
Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 92/100 (analogous) · Distinguishable 31/100 (hard to tell apart) · Match 43/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Vivid Cyan and Cornflower Blue are a clear pair (ΔE 26). They have closely related hues (18° apart) and their lightness is similar, so they read as two same-weight colours.
Vivid Cyan text on Cornflower Blue: 1.03:1 (Fail); Cornflower Blue text on Vivid Cyan: 1.03:1 (Fail). Neither meets AA at body size — nudging one color to #003A45 clears it.
Analogous — analogous — a recognised, balanced pairing (harmony 92/100). This is about how they look together (clothing, interiors, branding), independent of text contrast.
Not at body size — the best direction is only 1.0:1, below the 4.5:1 minimum. Nudging one colour to #003A45 clears AA.
Their CIE76 ΔE is about 26 — a clear pair.
clearly different colours (ΔE 26).
Explore each color: Vivid Cyan #09AEC9 · Cornflower Blue #53A3E1 · Shades: Vivid Cyan shades · Cornflower Blue shades · Contrast checker →