#0A89A5 · #8B7C28
Four independent scores (read the one that fits your goal): Readability 0/100 (fail) · Harmony 90/100 (split-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.
Cerulean and Olive are very different (ΔE 71). They have distinctly different hues (140° apart) and their lightness is similar, so they read as two same-weight colours.
Cerulean text on Olive: 1.02:1 (Fail); Olive text on Cerulean: 1.02:1 (Fail). Neither meets AA at body size — nudging one color to #00131B clears it.
Split-complementary — split-complementary — a recognised, balanced pairing (harmony 90/100). 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 #00131B clears AA.
Their CIE76 ΔE is about 71 — very different.
clearly different colours (ΔE 71).
Explore each color: Cerulean #0A89A5 · Olive #8B7C28 · Shades: Cerulean shades · Olive shades · Contrast checker →