Table 1 Color evaluation criteria
From: Commercial color impact on traditional heritage features in Suzhou Shiquan historic district
Standard range | Evaluation level | Explanation |
|---|---|---|
ΔE < 6.5 | Harmonious | Common people cannot observe differences with the naked eye. It can be confirmed that it is a harmonious color of the same kind. In the evaluation section, colors of this range can be used as a reflection of harmonious colors, and can be suggested as the basic colors. |
6.5 ≤ ΔE ≤ 13 | Generally harmonious | The color difference can be distinguished, but the color tone is still the same. Adding one in the evaluation can be considered as a more harmonious color range, and colors of this range can be suggested as auxiliary colors. |
13 ≤ ΔE ≤ 25 | Generally disharmonious | It can be determined that colors of this range have different color tone expressions that can be directly distinguished by the naked eye. In the evaluation section, colors of this range can be considered as a more discordant color range. |
25 ≤ ΔE | Disharmonious | Colors of this range represents for other colors, and there is no correlation between colors. |
