Colour Name Confusion

[figheadair]

This subject is a bit of a minefield and one that is complicated by the use of the term colour when shade, tone or hue is actually what is being referred to.

Red, blue, green etc., are colours; Ancient Blue, Modern Green etc., are shades/tones/hues. Bison is a trade name for a brown shade but I'm not sure that there is a definitive RGB value. There is a particular difficulty with Burgundy, Claret, Maroon, Rust, Magenta etc., all of which seem to be used indiscriminately for various shades of red.

Not much help in answering the OP but shows the difficulty in trying to determine the exact shade of a colour from a description.