#2A9458 · #6E8A22
Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 19/100 (clashing) · Distinguishable 77/100 (easy to tell apart) · Match 30/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Sea Green and Olive Drab are very different (ΔE 32). They have distinctly different hues (70° apart) and their lightness is similar, so they read as two same-weight colours.
Sea Green text on Olive Drab: 1.03:1 (Fail); Olive Drab text on Sea Green: 1.03:1 (Fail). Neither meets AA at body size — nudging one color to #001D09 clears it.
Clashing — awkward hue gap — tends to clash (harmony 19/100). 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 #001D09 clears AA.
Their CIE76 ΔE is about 32 — very different.
clearly different colours (ΔE 32).
Explore each color: Sea Green #2A9458 · Olive Drab #6E8A22 · Shades: Sea Green shades · Olive Drab shades · Contrast checker →