#555B25 · #6A521D
Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 98/100 (analogous) · Distinguishable 34/100 (hard to tell apart) · Match 66/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Dark Olive Green and Dark Yellow are a clear pair (ΔE 15). They have distinctly different hues (25° apart) and their lightness is similar, so they read as two same-weight colours.
Dark Olive Green text on Dark Yellow: 1.03:1 (Fail); Dark Yellow text on Dark Olive Green: 1.03:1 (Fail). Neither meets AA at body size — nudging one color to #C7CF95 clears it.
Analogous — analogous — a recognised, balanced pairing (harmony 98/100). 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 #C7CF95 clears AA.
Their CIE76 ΔE is about 15 — a clear pair.
clearly different colours (ΔE 15).
Explore each color: Dark Olive Green #555B25 · Dark Yellow #6A521D · Shades: Dark Olive Green shades · Dark Yellow shades · Contrast checker →