#5E7EF2 · #FFFFFF
Four independent scores (read the one that fits your goal): Readability 49/100 (aa large) · Harmony 92/100 (triadic) · Distinguishable 84/100 (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.
Vivid Blue and White are very different (ΔE 80). They have distinctly different hues (133° apart) and their lightness is different, giving a clear light/dark split.
Vivid Blue text on White: 3.66:1 (AA Large); White text on Vivid Blue: 3.66:1 (AA Large). Neither meets AA at body size — nudging one color to #506EE1 clears it.
Triadic — triadic — a recognised, balanced pairing (harmony 92/100). This is about how they look together (clothing, interiors, branding), independent of text contrast.
Not at body size — the best direction is only 3.7:1, below the 4.5:1 minimum. Nudging one colour to #506EE1 clears AA.
Their CIE76 ΔE is about 80 — very different.
clearly different colours (ΔE 80).
Explore each color: Vivid Blue #5E7EF2 · White #FFFFFF · Shades: Vivid Blue shades · White shades · Contrast checker →