#16A34A · #7F9400
Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 3/100 (clashing) · Distinguishable 83/100 (easy to tell apart) · Match 13/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Jade and Olive Drab are very different (ΔE 39). They have distinctly different hues (74° apart) and their lightness is similar, so they read as two same-weight colours.
Jade text on Olive Drab: 1.04:1 (Fail); Olive Drab text on Jade: 1.04:1 (Fail). Neither meets AA at body size — nudging one color to #002B0C clears it.
Clashing — awkward hue gap — tends to clash (harmony 3/100). 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 #002B0C clears AA.
Their CIE76 ΔE is about 39 — very different.
clearly different colours (ΔE 39).
Explore each color: Jade #16A34A · Olive Drab #7F9400 · Shades: Jade shades · Olive Drab shades · Contrast checker →