Hi there! Thanks for your question! We'd be happy to assist you. The Stone fabric is a true gray and should look great with the accent colors you've references! There is no blue tone underneath but the one thing to point out is that the product has been photographed under studio lighting so may seem a few shades lighter depending on how much direct/natural light is cast on it. Either way, it should be very complimentary to any pewter or brown accents! If you have any other questions, please let us know! We look forward to serving you :)