#00154C · #001F2F
Four independent scores (read the one that fits your goal): Readability 0/100 (fail) · Harmony 95/100 (analogous) · Distinguishable 24/100 (hard to tell apart) · Match 31/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Deep Vivid Blue and Deep Vivid Cyan are very different (ΔE 31). They have closely related hues (23° apart) and their lightness is similar, so they read as two same-weight colours.
Deep Vivid Blue text on Deep Vivid Cyan: 1.02:1 (Fail); Deep Vivid Cyan text on Deep Vivid Blue: 1.02:1 (Fail). Neither meets AA at body size — nudging one color to #6184C4 clears it.
Analogous — analogous — a recognised, balanced pairing (harmony 95/100). 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 #6184C4 clears AA.
Their CIE76 ΔE is about 31 — very different.
clearly different colours (ΔE 31).
Explore each color: Deep Vivid Blue #00154C · Deep Vivid Cyan #001F2F · Shades: Deep Vivid Blue shades · Deep Vivid Cyan shades · Contrast checker →