#243B60 · #3B345E
Four independent scores (read the one that fits your goal): Readability 0/100 (fail) · Harmony 99/100 (analogous) · Distinguishable 35/100 (hard to tell apart) · Match 77/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Dark Blue and Dark Dusty Indigo are a clear pair (ΔE 11). They have distinctly different hues (33° apart) and their lightness is similar, so they read as two same-weight colours.
Dark Blue text on Dark Dusty Indigo: 1.02:1 (Fail); Dark Dusty Indigo text on Dark Blue: 1.02:1 (Fail). Neither meets AA at body size — nudging one color to #89A4D0 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 #89A4D0 clears AA.
Their CIE76 ΔE is about 11 — a clear pair.
clearly different colours (ΔE 11).
Explore each color: Dark Blue #243B60 · Dark Dusty Indigo #3B345E · Shades: Dark Blue shades · Dark Dusty Indigo shades · Contrast checker →