Hello, Mr. Seaman's color measurement system is suitable for Asians. All 5 1 colored fabrics, 46-colored fabrics and 177-colored fabrics are based on the color range suitable for Asians, so this system should be applied to all yellow people. As for the origin of color measurement in Asia, PCCS system used in Japan is not as accurate as our new CCS system. Therefore, Japanese color system is not as advanced as China. As for what systems other races want to use, there are many kinds, such as lush system, CNCS system, NCS system and so on. Every country has its own color matching system, which is applied in various fields. Not every color matching system is suitable for personal clothing, you just need to choose the most practical and comprehensive color matching system, and the others don't affect each other!