#D6E1C2 · #FFFFFF
Four independent scores (read the one that fits your goal): Readability 7/100 (fail) · Harmony 33/100 (clashing) · Distinguishable 49/100 (somewhat similar) · Match 55/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Security and White are a clear pair (ΔE 21). They have distinctly different hues (81° apart) and their lightness is similar, so they read as two same-weight colours.
Security text on White: 1.36:1 (Fail); White text on Security: 1.36:1 (Fail). Neither meets AA at body size — nudging one color to #717A5F clears it.
Clashing — awkward hue gap — tends to clash (harmony 33/100). This is about how they look together (clothing, interiors, branding), independent of text contrast.
Not at body size — the best direction is only 1.4:1, below the 4.5:1 minimum. Nudging one colour to #717A5F clears AA.
Their CIE76 ΔE is about 21 — a clear pair.
clearly different colours (ΔE 21).
Explore each color: Security #D6E1C2 · White #FFFFFF · Shades: Security shades · White shades · Contrast checker →