#4E9561 · #6B7FC3
Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 53/100 (triadic (soft)) · Distinguishable 54/100 (somewhat similar) · Match 0/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Sea Green and Steel Blue are very different (ΔE 74). They have distinctly different hues (90° apart) and their lightness is similar, so they read as two same-weight colours.
Sea Green text on Steel Blue: 1.06:1 (Fail); Steel Blue text on Sea Green: 1.06:1 (Fail). Neither meets AA at body size — nudging one color to #002008 clears it.
Triadic (soft) — workable but not a textbook harmony (harmony 53/100). 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 #002008 clears AA.
Their CIE76 ΔE is about 74 — very different.
clearly different colours (ΔE 74).
Explore each color: Sea Green #4E9561 · Steel Blue #6B7FC3 · Shades: Sea Green shades · Steel Blue shades · Contrast checker →