Cultural heritage smoke-free sign design was place emphasis on legibility, harmony with environment, visibility and easy maintenance. Considering cultural heritage’s characteristics and surrounded environment, the chosen colors have low brightness and low chroma level. Moreover, fluorocarbon poltymers seal made sign harmonize with cultural heritage. The pictograms were engraved on sign with fluorine resin varnish to convey dignified and luxurious image.

To make smoke free sign which doesn’t destroy the landscape of cultural heritage, we extracted the colors from traditional palace and cultural heritages. The selected main colors were brown and dark grey. Plus, red color was used to emphasis the information.