表2 普通材料的各角点坐标和亮度因数 颜色用角点的色度坐标来决定可使用的颜色范围光源：标准光源D65(几何45／0°)亮度因数坐标1234普通材料色红χ0.6900.5950.5690.655≥0.07y0.3100.3150.3410.345蓝χ0.0780.1500.2100.137≥0.05y0.1710.2200.1600.038绿χ0.2300.2910.2480.007≥0.12y0.7540.4380.4090.703黄χ0.5190.4680.4270.465≥0.45y0.4800.4420.4830.534白χ0.3500.3000.2900.340≥0.75y0.3600.3100.3200.370黑χ0.3850.3000.2600.345≤0.03y0.3550.2700.3100.395 表3 逆反射光材料各角点坐标与亮度因数 颜色用角点的色度坐标来决定可使用的颜色范围光源：标准光源D65(几何45／0°)亮度因数坐标1234Ⅰ级Ⅱ级逆反材料色红χ0.6900.5950.5690.655≥0.03≥0.05y0.3100.3150.3410.345黄χ0.5450.4870.4270.465≥0.16≥0.27y0.4540.4230.4830.534绿χ0.0070.1770.2480.026≥0.03≥0.04y0.7030.3620.4090.399蓝χ0.0780.1500.2100.137≥0.01≥0.01y0.1700.2200.1600.038白χ0.3500.3000.2900.340≥0.27≥0.35y0.3600.3100.3200.370 表4 荧光材料的各角点坐标和亮度因数颜色用角点的色度坐标来决定可使用的颜色范围光源：标准光源D65(几何45／0°)亮度因数坐标1234荧光材料色红和桔红χ0.6900.5950.5350.655≥0.25y0.3100.3150.3410.345注：表2，表3和表4的观察视场角为2°。