#A3D9C2 · #EFBFA8
Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 82/100 (triadic) · Distinguishable 76/100 (easy to tell apart) · Match 16/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Seafoam and Melon are very different (ΔE 38). They have distinctly different hues (135° apart) and their lightness is similar, so they read as two same-weight colours.
Seafoam text on Melon: 1.05:1 (Fail); Melon text on Seafoam: 1.05:1 (Fail). Neither meets AA at body size — nudging one color to #2B5E4B clears it.
Triadic — triadic — a recognised, balanced pairing (harmony 82/100). 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 #2B5E4B clears AA.
Their CIE76 ΔE is about 38 — very different.
clearly different colours (ΔE 38).
Explore each color: Seafoam #A3D9C2 · Melon #EFBFA8 · Shades: Seafoam shades · Melon shades · Contrast checker →