#565C00 · #6034B0
Four independent scores (read the one that fits your goal): Readability 2/100 (fail) · Harmony 91/100 (split-complementary) · Distinguishable 86/100 (easy to tell apart) · Match 0/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Dark Olive Green and Grape are very different (ΔE 120). They have near-opposite hues (163° apart) and their lightness is different, giving a clear light/dark split.
Dark Olive Green text on Grape: 1.12:1 (Fail); Grape text on Dark Olive Green: 1.12:1 (Fail). Neither meets AA at body size — nudging one color to #BFC97A clears it.
Split-complementary — split-complementary — a recognised, balanced pairing (harmony 91/100). This is about how they look together (clothing, interiors, branding), independent of text contrast.
Not at body size — the best direction is only 1.1:1, below the 4.5:1 minimum. Nudging one colour to #BFC97A clears AA.
Their CIE76 ΔE is about 120 — very different.
clearly different colours (ΔE 120).
Explore each color: Dark Olive Green #565C00 · Grape #6034B0 · Shades: Dark Olive Green shades · Grape shades · Contrast checker →