#151C31 · #251C04
Four independent scores (read the one that fits your goal): Readability 0/100 (fail) · Harmony 100/100 (complementary) · Distinguishable 61/100 (somewhat similar) · Match 35/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Deep Dusty Blue and Deep Yellow are a clear pair (ΔE 30). They have near-opposite hues (179° apart) and their lightness is similar, so they read as two same-weight colours.
Deep Dusty Blue text on Deep Yellow: 1.00:1 (Fail); Deep Yellow text on Deep Dusty Blue: 1.00:1 (Fail). Neither meets AA at body size — nudging one color to #7A849E clears it.
Complementary — complementary — a recognised, balanced pairing (harmony 100/100). 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 #7A849E clears AA.
Their CIE76 ΔE is about 30 — a clear pair.
clearly different colours (ΔE 30).
Explore each color: Deep Dusty Blue #151C31 · Deep Yellow #251C04 · Shades: Deep Dusty Blue shades · Deep Yellow shades · Contrast checker →