目的 探究纸张荧光增白剂含量(OBA)对色彩复制的影响，有利于准确测量颜色并实现色彩在不同设备间正确转换，准确复制颜色。方法 选择含较多荧光增白剂、含少量荧光增白剂、不含荧光增白剂3种类型的纸张，分别基于M1/M2的观察条件，测量纸白、CMYK线性色表以及IT8.7/4色表，分析M1/M2观察条件下Δb^*、ΔE^*值以及ICC曲线变化趋势。结果 在M1和M2观察条件下测量纸张基色b^*值的差值绝对值可以确定基材中的OBA的含量，且OBA含量对颜色测量数据的影响与阶调值相关，基本呈负线性关系;在M1观察条件下测量数据生成ICC色彩特性文件，整体线性偏移蓝色，即b^*值往负值线性偏移。结论 基于M1观察条件的色彩管理流程，需进一步研究荧光增白剂含量对b^*值进行线性补偿校正的影响，从而减少纸张荧光增白剂对色彩管理的影响，使纸张上的颜色复制达到理想状态。

The work aims to explore the effect of optical brightening agent (OBA) content on color reproduction so as to help precise color measurement, realize correct color conversion between different devices, and accurately reproduce color. Three types of paper with more OBA, little OBA and without OBA were selected. Paper whiteness, linear color code and IT8.7/4 color code were measured respectively based on M1/M2 observation conditions. Then, the change trend of Δb, ΔE and ICC curve under M1/M2 observation conditions was analyzed. The OBA content in the substrate could be determined by measuring the absolute value of the difference of b value under M1 and M2 observation conditions. The effect of OBA content on color measurement data was related to step value, which was in negative linear relation. The data were measured under M1 observation conditions to generate ICC color characteristic file. The overall linear offset was blue, indicating that the value of b was linearly offset to the negative value. The color management process based on M1 observation conditions needs further research on the linear compensation and correction of b value for the content of OBA, so as to reduce the effect of OBA on color management and make the color reproduction on paper reach an ideal state.