#00626A · #6A521C
Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 95/100 (split-complementary) · Distinguishable 93/100 (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 Vivid Cyan and Dark Yellow are very different (ΔE 52). They have distinctly different hues (143° apart) and their lightness is similar, so they read as two same-weight colours.
Dark Vivid Cyan text on Dark Yellow: 1.04:1 (Fail); Dark Yellow text on Dark Vivid Cyan: 1.04:1 (Fail). Neither meets AA at body size — nudging one color to #89D7DF clears it.
Split-complementary — split-complementary — 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 #89D7DF clears AA.
Their CIE76 ΔE is about 52 — very different.
clearly different colours (ΔE 52).
Explore each color: Dark Vivid Cyan #00626A · Dark Yellow #6A521C · Shades: Dark Vivid Cyan shades · Dark Yellow shades · Contrast checker →