#4DC4E4 · #77B9F8
Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 89/100 (analogous) · Distinguishable 29/100 (hard to tell apart) · Match 49/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Cyan and Light Vivid Cyan are a clear pair (ΔE 23). They have closely related hues (17° apart) and their lightness is similar, so they read as two same-weight colours.
Cyan text on Light Vivid Cyan: 1.03:1 (Fail); Light Vivid Cyan text on Cyan: 1.03:1 (Fail). Neither meets AA at body size — nudging one color to #004D5F clears it.
Analogous — analogous — a recognised, balanced pairing (harmony 89/100). 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 #004D5F clears AA.
Their CIE76 ΔE is about 23 — a clear pair.
clearly different colours (ΔE 23).
Explore each color: Cyan #4DC4E4 · Light Vivid Cyan #77B9F8 · Shades: Cyan shades · Light Vivid Cyan shades · Contrast checker →