Blue gray paints are blues with so little chroma that they read as gray until you set them next to a true neutral. Light examples include Sherwin-Williams Krypton and Sherwin-Williams Languid Blue. Sherwin-Williams Smoky Blue and Benjamin Moore Georgian Bay sit in the middle of the range. Sherwin-Williams Gale Force and Benjamin Moore Hale Navy are the dark end. Open any color to see its closest match in the other brands.