#89DCCF · #D5BDF7
Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 62/100 (triadic (soft)) · Distinguishable 41/100 (somewhat similar) · Match 0/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Turquoise and Periwinkle are very different (ΔE 53). They have distinctly different hues (94° apart) and their lightness is similar, so they read as two same-weight colours.
Turquoise text on Periwinkle: 1.06:1 (Fail); Periwinkle text on Turquoise: 1.06:1 (Fail). Neither meets AA at body size — nudging one color to #005E55 clears it.
Triadic (soft) — workable but not a textbook harmony (harmony 62/100). This is about how they look together (clothing, interiors, branding), independent of text contrast.
Not at body size — the best direction is only 1.1:1, below the 4.5:1 minimum. Nudging one colour to #005E55 clears AA.
Their CIE76 ΔE is about 53 — very different.
clearly different colours (ΔE 53).
Explore each color: Turquoise #89DCCF · Periwinkle #D5BDF7 · Shades: Turquoise shades · Periwinkle shades · Contrast checker →