#002418 · #310E22
Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 77/100 (complementary) · Distinguishable 47/100 (somewhat similar) · Match 15/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Deep Vivid Teal and Espresso are very different (ΔE 39). They have near-opposite hues (166° apart) and their lightness is similar, so they read as two same-weight colours.
Deep Vivid Teal text on Espresso: 1.04:1 (Fail); Espresso text on Deep Vivid Teal: 1.04:1 (Fail). Neither meets AA at body size — nudging one color to #668A7A clears it.
Complementary — complementary — a recognised, balanced pairing (harmony 77/100). 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 #668A7A clears AA.
Their CIE76 ΔE is about 39 — very different.
clearly different colours (ΔE 39).
Explore each color: Deep Vivid Teal #002418 · Espresso #310E22 · Shades: Deep Vivid Teal shades · Espresso shades · Contrast checker →