#9BD8FF · #FFFFFF
Four independent scores (read the one that fits your goal): Readability 11/100 (fail) · Harmony 100/100 (split-complementary) · Distinguishable 71/100 (easy to tell apart) · Match 30/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Light Sky Blue and White are very different (ΔE 32). They have near-opposite hues (157° apart) and their lightness is similar, so they read as two same-weight colours.
Light Sky Blue text on White: 1.54:1 (Fail); White text on Light Sky Blue: 1.54:1 (Fail). Neither meets AA at body size — nudging one color to #417DA0 clears it.
Split-complementary — split-complementary — a recognised, balanced pairing (harmony 100/100). This is about how they look together (clothing, interiors, branding), independent of text contrast.
Not at body size — the best direction is only 1.5:1, below the 4.5:1 minimum. Nudging one colour to #417DA0 clears AA.
Their CIE76 ΔE is about 32 — very different.
clearly different colours (ΔE 32).
Explore each color: Light Sky Blue #9BD8FF · White #FFFFFF · Shades: Light Sky Blue shades · White shades · Contrast checker →