#3AB0A2 · #63AE7D
Four independent scores (read the one that fits your goal): Readability 0/100 (fail) · Harmony 100/100 (analogous) · Distinguishable 51/100 (somewhat similar) · Match 55/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Waterfall and Medium Sea Green are a clear pair (ΔE 20). They have distinctly different hues (32° apart) and their lightness is similar, so they read as two same-weight colours.
Waterfall text on Medium Sea Green: 1.00:1 (Fail); Medium Sea Green text on Waterfall: 1.00:1 (Fail). Neither meets AA at body size — nudging one color to #003E38 clears it.
Analogous — analogous — 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 #003E38 clears AA.
Their CIE76 ΔE is about 20 — a clear pair.
clearly different colours (ΔE 20).
Explore each color: Waterfall #3AB0A2 · Medium Sea Green #63AE7D · Shades: Waterfall shades · Medium Sea Green shades · Contrast checker →