#243B63 · #5D2A2A
Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 93/100 (split-complementary) · Distinguishable 84/100 (easy to tell apart) · Match 8/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Dark Blue and Dark Dusty Red are very different (ΔE 42). They have distinctly different hues (142° apart) and their lightness is similar, so they read as two same-weight colours.
Dark Blue text on Dark Dusty Red: 1.03:1 (Fail); Dark Dusty Red text on Dark Blue: 1.03:1 (Fail). Neither meets AA at body size — nudging one color to #88A4D2 clears it.
Split-complementary — split-complementary — a recognised, balanced pairing (harmony 93/100). 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 #88A4D2 clears AA.
Their CIE76 ΔE is about 42 — very different.
clearly different colours (ΔE 42).
Explore each color: Dark Blue #243B63 · Dark Dusty Red #5D2A2A · Shades: Dark Blue shades · Dark Dusty Red shades · Contrast checker →