#D4CBFF · #FFFFFF
Four independent scores (read the one that fits your goal): Readability 10/100 (fail) · Harmony 91/100 (triadic) · Distinguishable 43/100 (somewhat similar) · Match 30/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Periwinkle and White are very different (ΔE 32). They have distinctly different hues (110° apart) and their lightness is similar, so they read as two same-weight colours.
Periwinkle text on White: 1.52:1 (Fail); White text on Periwinkle: 1.52:1 (Fail). Neither meets AA at body size — nudging one color to #79709F 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 1.5:1, below the 4.5:1 minimum. Nudging one colour to #79709F clears AA.
Their CIE76 ΔE is about 32 — very different.
clearly different colours (ΔE 32).
Explore each color: Periwinkle #D4CBFF · White #FFFFFF · Shades: Periwinkle shades · White shades · Contrast checker →