#408E61 · #FFFFFF
Four independent scores (read the one that fits your goal): Readability 53/100 (aa large) · Harmony 100/100 (split-complementary) · Distinguishable 97/100 (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.
Sea Green and White are very different (ΔE 61). They have distinctly different hues (145° apart) and their lightness is different, giving a clear light/dark split.
Sea Green text on White: 3.99:1 (AA Large); White text on Sea Green: 3.99:1 (AA Large). Neither meets AA at body size — nudging one color to #378559 clears it.
Split-complementary — split-complementary — 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 4.0:1, below the 4.5:1 minimum. Nudging one colour to #378559 clears AA.
Their CIE76 ΔE is about 61 — very different.
clearly different colours (ΔE 61).
Explore each color: Sea Green #408E61 · White #FFFFFF · Shades: Sea Green shades · White shades · Contrast checker →