如何将图像historgam存储到数据库中并能够执行搜索

I need to write webapp where user will be able to perform search based on images colors. My question is how to store color data? I think that best solution will be to reduce image colors and prepare histogram for each r, g and b channel but I don't have idea how to design database. I want to use MySQL DBMS. Could someone point me into right direction?I need to write webapp where user will be able