#00B0CA · #BB9A0C
Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 76/100 (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 Cyan and Vivid Yellow are very different (ΔE 95). They have distinctly different hues (139° apart) and their lightness is similar, so they read as two same-weight colours.
Vivid Cyan text on Vivid Yellow: 1.04:1 (Fail); Vivid Yellow text on Vivid Cyan: 1.04:1 (Fail). Neither meets AA at body size — nudging one color to #003B46 clears it.
Split-complementary — split-complementary — a recognised, balanced pairing (harmony 76/100). 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 #003B46 clears AA.
Their CIE76 ΔE is about 95 — very different.
clearly different colours (ΔE 95).
Explore each color: Vivid Cyan #00B0CA · Vivid Yellow #BB9A0C · Shades: Vivid Cyan shades · Vivid Yellow shades · Contrast checker →