#7B59F6 · #FFFFFF
Four independent scores (read the one that fits your goal): Readability 61/100 (aa) · Harmony 92/100 (triadic) · Distinguishable 81/100 (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.
Medium Slate Blue and White are very different (ΔE 104). They have distinctly different hues (107° apart) and their lightness is different, giving a clear light/dark split.
Medium Slate Blue text on White: 4.56:1 (AA); White text on Medium Slate Blue: 4.56:1 (AA). Both directions meet WCAG AA.
Triadic — triadic — a recognised, balanced pairing (harmony 92/100). This is about how they look together (clothing, interiors, branding), independent of text contrast.
Yes — 4.6:1, which meets WCAG AA.
Their CIE76 ΔE is about 104 — very different.
clearly different colours (ΔE 104).
Explore each color: Medium Slate Blue #7B59F6 · White #FFFFFF · Shades: Medium Slate Blue shades · White shades · Contrast checker →