#6FAFF4 · #9EA1F5
Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 99/100 (analogous) · Distinguishable 46/100 (somewhat similar) · Match 57/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Vivid Blue and Light Blue are a clear pair (ΔE 20). They have distinctly different hues (27° apart) and their lightness is similar, so they read as two same-weight colours.
Vivid Blue text on Light Blue: 1.03:1 (Fail); Light Blue text on Vivid Blue: 1.03:1 (Fail). Neither meets AA at body size — nudging one color to #003F75 clears it.
Analogous — analogous — a recognised, balanced pairing (harmony 99/100). 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 #003F75 clears AA.
Their CIE76 ΔE is about 20 — a clear pair.
clearly different colours (ΔE 20).
Explore each color: Vivid Blue #6FAFF4 · Light Blue #9EA1F5 · Shades: Vivid Blue shades · Light Blue shades · Contrast checker →