Dear RonRon, from what you said, it sounds like you have little experience with Photoshop, technically accurate product photography, color management, etc.
For example, do you realize that to have any hope of achieving even semi-accurate colors, you must have a complete color-managed workflow, starting with accurate color photography or scans of the samples, but also including hardware calibration of your monitor, and, if you are going to eventually print the final image as cards, you need to be very familiar with the CMYK color space, soft proofing, using specific printer profiles for the specific printing method, type of press, inks, and paper used, etc. If you are not, you could easily waste thousands of dollars of your company's money producing printed color charts with surprisingly inaccurate colors.
I hate to be a nay-sayer, but I feel that I should strongly caution you that such projects are always executed by a professional with long experience in such matters.
In one of your earlier posts, you mused about whether or not samples could be photographed.
Of course they can. You could do it with your smart phone with the samples illuminated by sickly green office fluorescent lights, or you could spend thousands of dollars and have a professional product photographer shoot super accurate pix of the samples ... or, you could do something in-between that will give you a reasonable level of color accuracy.
You & your organization really needs someone to guide you through this. It's not as simple as you think.
Sincerely,
Tom M