#574E7F · #585B21
Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 98/100 (complementary) · Distinguishable 69/100 (somewhat similar) · Match 0/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Muted Indigo and Dark Olive Green are very different (ΔE 64). They have near-opposite hues (172° apart) and their lightness is similar, so they read as two same-weight colours.
Muted Indigo text on Dark Olive Green: 1.05:1 (Fail); Dark Olive Green text on Muted Indigo: 1.05:1 (Fail). Neither meets AA at body size — nudging one color to #CFC7FF clears it.
Complementary — complementary — 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 #CFC7FF clears AA.
Their CIE76 ΔE is about 64 — very different.
clearly different colours (ΔE 64).
Explore each color: Muted Indigo #574E7F · Dark Olive Green #585B21 · Shades: Muted Indigo shades · Dark Olive Green shades · Contrast checker →