#C2D9C2 · #C5D2ED
Four independent scores (read the one that fits your goal): Readability 0/100 (fail) · Harmony 72/100 (triadic) · Distinguishable 35/100 (hard to tell apart) · Match 41/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Fog and Periwinkle are a clear pair (ΔE 27). They have distinctly different hues (101° apart) and their lightness is similar, so they read as two same-weight colours.
Fog text on Periwinkle: 1.01:1 (Fail); Periwinkle text on Fog: 1.01:1 (Fail). Neither meets AA at body size — nudging one color to #4B5F4C clears it.
Triadic — triadic — a recognised, balanced pairing (harmony 72/100). 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 #4B5F4C clears AA.
Their CIE76 ΔE is about 27 — a clear pair.
clearly different colours (ΔE 27).
Explore each color: Fog #C2D9C2 · Periwinkle #C5D2ED · Shades: Fog shades · Periwinkle shades · Contrast checker →