#C5D6EB · #D1D2EB
Four independent scores (read the one that fits your goal): Readability 0/100 (fail) · Harmony 97/100 (analogous) · Distinguishable 12/100 (hard to tell apart) · Match 87/100 (close). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
FluidBlue and Light Gray are very close (ΔE 6). They have closely related hues (25° apart) and their lightness is similar, so they read as two same-weight colours.
FluidBlue text on Light Gray: 1.00:1 (Fail); Light Gray text on FluidBlue: 1.00:1 (Fail). Neither meets AA at body size — nudging one color to #4F5D70 clears it.
Analogous — analogous — a recognised, balanced pairing (harmony 97/100). 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 #4F5D70 clears AA.
Their CIE76 ΔE is about 6 — very close.
close but visibly different (ΔE 5.9).
Explore each color: FluidBlue #C5D6EB · Light Gray #D1D2EB · Shades: FluidBlue shades · Light Gray shades · Contrast checker →