#018C8E · #A26F00
Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 78/100 (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.
Dark Cyan and Dark Vivid Yellow are very different (ΔE 80). They have distinctly different hues (140° apart) and their lightness is similar, so they read as two same-weight colours.
Dark Cyan text on Dark Vivid Yellow: 1.07:1 (Fail); Dark Vivid Yellow text on Dark Cyan: 1.07:1 (Fail). Neither meets AA at body size — nudging one color to #000D0E clears it.
Split-complementary — split-complementary — a recognised, balanced pairing (harmony 78/100). 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 #000D0E clears AA.
Their CIE76 ΔE is about 80 — very different.
clearly different colours (ΔE 80).
Explore each color: Dark Cyan #018C8E · Dark Vivid Yellow #A26F00 · Shades: Dark Cyan shades · Dark Vivid Yellow shades · Contrast checker →