#15210C · #23172A
Four independent scores (read the one that fits your goal): Readability 0/100 (fail) · Harmony 98/100 (complementary) · Distinguishable 26/100 (hard to tell apart) · Match 33/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Deep Green and Deep Dusty Indigo are very different (ΔE 30). They have near-opposite hues (176° apart) and their lightness is similar, so they read as two same-weight colours.
Deep Green text on Deep Dusty Indigo: 1.02:1 (Fail); Deep Dusty Indigo text on Deep Green: 1.02:1 (Fail). Neither meets AA at body size — nudging one color to #78886E clears it.
Complementary — complementary — 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 #78886E clears AA.
Their CIE76 ΔE is about 30 — very different.
clearly different colours (ΔE 30).
Explore each color: Deep Green #15210C · Deep Dusty Indigo #23172A · Shades: Deep Green shades · Deep Dusty Indigo shades · Contrast checker →