#66AE6E · #7998E4
Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 67/100 (triadic (soft)) · Distinguishable 62/100 (somewhat similar) · Match 0/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Medium Sea Green and Cornflower Blue are very different (ΔE 82). They have distinctly different hues (96° apart) and their lightness is similar, so they read as two same-weight colours.
Medium Sea Green text on Cornflower Blue: 1.06:1 (Fail); Cornflower Blue text on Medium Sea Green: 1.06:1 (Fail). Neither meets AA at body size — nudging one color to #003B0E clears it.
Triadic (soft) — workable but not a textbook harmony (harmony 67/100). This is about how they look together (clothing, interiors, branding), independent of text contrast.
Not at body size — the best direction is only 1.1:1, below the 4.5:1 minimum. Nudging one colour to #003B0E clears AA.
Their CIE76 ΔE is about 82 — very different.
clearly different colours (ΔE 82).
Explore each color: Medium Sea Green #66AE6E · Cornflower Blue #7998E4 · Shades: Medium Sea Green shades · Cornflower Blue shades · Contrast checker →