AMC uses two independent checks — ΔE and max channel deviation — both must pass. All colour data is embedded locally; no internet required.
Colour system reference
Pantone C (Coated) — coated paper stock and most hard substrates. Most common reference for screen printing artwork approvals.
Pantone U (Uncoated) — same ink formulas as Coated but printed on uncoated stock. Colours appear more muted. Use when client supplies a U code.
Pantone TCX — Fashion, Home + Interiors textile cotton standard. 2,310 colours matched to cotton fabric. The correct reference for garment and apparel decoration.
CMC 2:1 thresholds
Imperceptible ΔE < 1
No visible difference. Passes all colour-critical applications.
Barely perceptible ΔE 1–2
Only visible to trained eye under controlled conditions.
Noticeable ΔE 2–5
Visible on close inspection. Flag for client approval before running.
Clearly different ΔE 5–10
Noticeable to most people side-by-side. Not suitable without sign-off.
Significant mismatch ΔE > 10
Clearly different colour family. Not suitable as a substitute.
Data note: All hex values are sRGB approximations from public-domain datasets. Cross-check against a physical fan deck under D50 lighting for press-critical work.