#57B065 · #FFFFFF
Four independent scores (read the one that fits your goal): Readability 34/100 (fail) · Harmony 99/100 (triadic) · Distinguishable 90/100 (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.
Medium Sea Green and White are very different (ΔE 63). They have distinctly different hues (129° apart) and their lightness is different, giving a clear light/dark split.
Medium Sea Green text on White: 2.69:1 (Fail); White text on Medium Sea Green: 2.69:1 (Fail). Neither meets AA at body size — nudging one color to #2B873F clears it.
Triadic — triadic — a recognised, balanced pairing (harmony 99/100). This is about how they look together (clothing, interiors, branding), independent of text contrast.
Not at body size — the best direction is only 2.7:1, below the 4.5:1 minimum. Nudging one colour to #2B873F clears AA.
Their CIE76 ΔE is about 63 — very different.
clearly different colours (ΔE 63).
Explore each color: Medium Sea Green #57B065 · White #FFFFFF · Shades: Medium Sea Green shades · White shades · Contrast checker →