Abstract: So far no data is available with respect to the preferred chromaticityand color tolerance of the Chinese national flag. In this experiment 45Chinese flags (five star red flag) made of cotton cloth, polyester fibre andsilk separately with various chromaticity coordinates and reflectances wereused as experimental samples. The category judgment method was employ-ed for subjective evaluation of the preferred chromaticity and color tole-rance of the Chinese national flag. The data for preferred chromaticityand color tolerance of test samples obtained in this study can be of use asthe national standard for the Chinese national flag.

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