Although, computer-controlled devices have been widely used, they have the problem of device-dependent color reproduction. As a rational solution for this problem, a color management system based on device-independent color space has attracted attention. However, such color management systems can only deal with images under standard illuminant because these systems are calculated by tristimulus values under standard illuminant, such as CIE XYZ or L*a*b*.In this article, we propose to use spectral reflectances as the intermediate space for color management. We estimated spectral reflectance from pictures taken by a digital camera and displayed images on CRT appropriately.