#D2CAF7 · #FFFFFF
Four independent scores (read the one that fits your goal): Readability 11/100 (fail) · Harmony 91/100 (triadic) · Distinguishable 44/100 (somewhat similar) · Match 36/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Periwinkle and White are a clear pair (ΔE 29). They have distinctly different hues (109° apart) and their lightness is similar, so they read as two same-weight colours.
Periwinkle text on White: 1.55:1 (Fail); White text on Periwinkle: 1.55:1 (Fail). Neither meets AA at body size — nudging one color to #79719A clears it.
Triadic — triadic — 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 1.6:1, below the 4.5:1 minimum. Nudging one colour to #79719A clears AA.
Their CIE76 ΔE is about 29 — a clear pair.
clearly different colours (ΔE 29).
Explore each color: Periwinkle #D2CAF7 · White #FFFFFF · Shades: Periwinkle shades · White shades · Contrast checker →