#6FB0F3 · #9DA2F4
Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 98/100 (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.
Blue and Light Blue are a clear pair (ΔE 19). They have distinctly different hues (26° apart) and their lightness is similar, so they read as two same-weight colours.
Blue text on Light Blue: 1.03:1 (Fail); Light Blue text on Blue: 1.03:1 (Fail). Neither meets AA at body size — nudging one color to #003F73 clears it.
Analogous — analogous — a recognised, balanced pairing (harmony 98/100). 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 #003F73 clears AA.
Their CIE76 ΔE is about 19 — a clear pair.
clearly different colours (ΔE 19).
Explore each color: Blue #6FB0F3 · Light Blue #9DA2F4 · Shades: Blue shades · Light Blue shades · Contrast checker →