#2A79E4 · #A47100
Four independent scores (read the one that fits your goal): Readability 0/100 (fail) · Harmony 100/100 (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.
Royal Blue and Copper are very different (ΔE 119). They have near-opposite hues (173° apart) and their lightness is different, giving a clear light/dark split.
Royal Blue text on Copper: 1.00:1 (Fail); Copper text on Royal Blue: 1.00:1 (Fail). Neither meets AA at body size — nudging one color to #000B33 clears it.
Complementary — complementary — a recognised, balanced pairing (harmony 100/100). 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 #000B33 clears AA.
Their CIE76 ΔE is about 119 — very different.
clearly different colours (ΔE 119).
Explore each color: Royal Blue #2A79E4 · Copper #A47100 · Shades: Royal Blue shades · Copper shades · Contrast checker →