Having discovered www.lulu.com I wondered how I could obtain accurate printing results.
I then decided to create a Color Reference Book for the format I was interested in.
This I would then order, and use the color values which matched the color I would like to have.
And so the "Process Color Book - A4 Perfect Bound" was born!
I have used increments of 0, 5, 10, 20, 30, 40, 50, 60, 70, 80, 90, 95, 100 percent, a total of 26.364 CMYK colors.
I recommend that you order an example of the book for your chosen format, shortly before you have your own design ready for printing, and use it to check if the colors you have chosen came out as you expected.
Please remember you can not use this book as an absolute accurate reference, as we have no control over the printing parameters, so use this book only as an approximate guide. No responsibility whatsoever is accepted for the outcome of your printed items based on the colors in this book.