#686ED3 · #945EC0
Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 96/100 (analogous) · Distinguishable 54/100 (somewhat similar) · Match 60/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Slate Blue and Amethyst are a clear pair (ΔE 18). They have distinctly different hues (36° apart) and their lightness is similar, so they read as two same-weight colours.
Slate Blue text on Amethyst: 1.03:1 (Fail); Amethyst text on Slate Blue: 1.03:1 (Fail). Neither meets AA at body size — nudging one color to #FDFEFF clears it.
Analogous — analogous — a recognised, balanced pairing (harmony 96/100). 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 #FDFEFF clears AA.
Their CIE76 ΔE is about 18 — a clear pair.
clearly different colours (ΔE 18).
Explore each color: Slate Blue #686ED3 · Amethyst #945EC0 · Shades: Slate Blue shades · Amethyst shades · Contrast checker →