#0B81CF · #AF6A00
Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 82/100 (complementary) · Distinguishable 100/100 (easy to tell apart) · Match 0/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Vivid Cyan and Copper are very different (ΔE 109). They have near-opposite hues (168° apart) and their lightness is similar, so they read as two same-weight colours.
Vivid Cyan text on Copper: 1.03:1 (Fail); Copper text on Vivid Cyan: 1.03:1 (Fail). Neither meets AA at body size — nudging one color to #000D22 clears it.
Complementary — complementary — a recognised, balanced pairing (harmony 82/100). 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 #000D22 clears AA.
Their CIE76 ΔE is about 109 — very different.
clearly different colours (ΔE 109).
Explore each color: Vivid Cyan #0B81CF · Copper #AF6A00 · Shades: Vivid Cyan shades · Copper shades · Contrast checker →