#3F9200 · #A552C0
Four independent scores (read the one that fits your goal): Readability 3/100 (fail) · Harmony 92/100 (complementary) · Distinguishable 79/100 (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.
Basil and Amethyst are very different (ΔE 140). They have near-opposite hues (169° apart) and their lightness is different, giving a clear light/dark split.
Basil text on Amethyst: 1.17:1 (Fail); Amethyst text on Basil: 1.17:1 (Fail). Neither meets AA at body size — nudging one color to #F7FFF4 clears it.
Complementary — complementary — a recognised, balanced pairing (harmony 92/100). This is about how they look together (clothing, interiors, branding), independent of text contrast.
Not at body size — the best direction is only 1.2:1, below the 4.5:1 minimum. Nudging one colour to #F7FFF4 clears AA.
Their CIE76 ΔE is about 140 — very different.
clearly different colours (ΔE 140).
Explore each color: Basil #3F9200 · Amethyst #A552C0 · Shades: Basil shades · Amethyst shades · Contrast checker →