#31652E · #585C00
Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 55/100 (analogous (soft)) · Distinguishable 67/100 (somewhat similar) · Match 44/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Dark Olive Green and Dark Olive Green are a clear pair (ΔE 26). They have distinctly different hues (54° apart) and their lightness is similar, so they read as two same-weight colours.
Dark Olive Green text on Dark Olive Green: 1.03:1 (Fail); Dark Olive Green text on Dark Olive Green: 1.03:1 (Fail). Neither meets AA at body size — nudging one color to #A3DC9E clears it.
Analogous (soft) — workable but not a textbook harmony (harmony 55/100). 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 #A3DC9E clears AA.
Their CIE76 ΔE is about 26 — a clear pair.
clearly different colours (ΔE 26).
Explore each color: Dark Olive Green #31652E · Dark Olive Green #585C00 · Shades: Dark Olive Green shades · Dark Olive Green shades · Contrast checker →