#5B7BFF · #E84938
Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 73/100 (split-complementary) · Distinguishable 100/100 (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 Orange Red are very different (ΔE 118). They have distinctly different hues (138° apart) and their lightness is similar, so they read as two same-weight colours.
Vivid Blue text on Orange Red: 1.05:1 (Fail); Orange Red text on Vivid Blue: 1.05:1 (Fail). Neither meets AA at body size — nudging one color to #0C0066 clears it.
Split-complementary — split-complementary — a recognised, balanced pairing (harmony 73/100). This is about how they look together (clothing, interiors, branding), independent of text contrast.
Not at body size — the best direction is only 1.1:1, below the 4.5:1 minimum. Nudging one colour to #0C0066 clears AA.
Their CIE76 ΔE is about 118 — very different.
clearly different colours (ΔE 118).
Explore each color: Vivid Blue #5B7BFF · Orange Red #E84938 · Shades: Vivid Blue shades · Orange Red shades · Contrast checker →