#638B00 · #FFFFFF
Four independent scores (read the one that fits your goal): Readability 54/100 (aa large) · Harmony 20/100 (clashing) · Distinguishable 100/100 (easy to tell apart) · Match 0/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Olive Drab and White are very different (ΔE 80). They have distinctly different hues (77° apart) and their lightness is different, giving a clear light/dark split.
Olive Drab text on White: 4.02:1 (AA Large); White text on Olive Drab: 4.02:1 (AA Large). Neither meets AA at body size — nudging one color to #5D8200 clears it.
Clashing — awkward hue gap — tends to clash (harmony 20/100). This is about how they look together (clothing, interiors, branding), independent of text contrast.
Not at body size — the best direction is only 4.0:1, below the 4.5:1 minimum. Nudging one colour to #5D8200 clears AA.
Their CIE76 ΔE is about 80 — very different.
clearly different colours (ΔE 80).
Explore each color: Olive Drab #638B00 · White #FFFFFF · Shades: Olive Drab shades · White shades · Contrast checker →