#121B30 · #1E172E
Four independent scores (read the one that fits your goal): Readability 0/100 (fail) · Harmony 96/100 (analogous) · Distinguishable 24/100 (hard to tell apart) · Match 86/100 (close). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Deep Blue and Deep Dusty Indigo are very close (ΔE 6). They have distinctly different hues (36° apart) and their lightness is similar, so they read as two same-weight colours.
Deep Blue text on Deep Dusty Indigo: 1.01:1 (Fail); Deep Dusty Indigo text on Deep Blue: 1.01:1 (Fail). Neither meets AA at body size — nudging one color to #76839D clears it.
Analogous — analogous — a recognised, balanced pairing (harmony 96/100). 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 #76839D clears AA.
Their CIE76 ΔE is about 6 — very close.
close but visibly different (ΔE 6.5).
Explore each color: Deep Blue #121B30 · Deep Dusty Indigo #1E172E · Shades: Deep Blue shades · Deep Dusty Indigo shades · Contrast checker →