#008E91 · #E11C48
Four independent scores (read the one that fits your goal): Readability 4/100 (fail) · Harmony 84/100 (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.
Dark Cyan and Crimson are very different (ΔE 109). They have near-opposite hues (165° apart) and their lightness is different, giving a clear light/dark split.
Dark Cyan text on Crimson: 1.18:1 (Fail); Crimson text on Dark Cyan: 1.18:1 (Fail). Neither meets AA at body size — nudging one color to #E5FFFF clears it.
Split-complementary — split-complementary — a recognised, balanced pairing (harmony 84/100). This is about how they look together (clothing, interiors, branding), independent of text contrast.
Not at body size — the best direction is only 1.2:1, below the 4.5:1 minimum. Nudging one colour to #E5FFFF clears AA.
Their CIE76 ΔE is about 109 — very different.
clearly different colours (ΔE 109).
Explore each color: Dark Cyan #008E91 · Crimson #E11C48 · Shades: Dark Cyan shades · Crimson shades · Contrast checker →