#676FD5 · #907B00
Four independent scores (read the one that fits your goal): Readability 1/100 (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.
Blue and Olive are very different (ΔE 115). They have near-opposite hues (176° apart) and their lightness is different, giving a clear light/dark split.
Blue text on Olive: 1.04:1 (Fail); Olive text on Blue: 1.04:1 (Fail). Neither meets AA at body size — nudging one color to #0E0049 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 #0E0049 clears AA.
Their CIE76 ΔE is about 115 — very different.
clearly different colours (ΔE 115).
Explore each color: Blue #676FD5 · Olive #907B00 · Shades: Blue shades · Olive shades · Contrast checker →