Quite correct, Aidan! My error. Got oxide on the brain. Gulf red it is.
By considerable further research I have found references to the BS381C colour series.
In 1930 the first range of standardised colours were produced by the British Colour Council and were named as BS381, the following year (1931) additional colours were added and it became known as BS381C. As these colours became more popular with the textile industry, the paint industry adopted the colour pallet and in 1949 the British Colour Council issued a new directory of 378 colours illustrated in matt, gloss and a fabric pile aimed at interior decoration. These colours soon became adopted by the armed forces and other government bodies. The colours soon had names added to them; names such as Oxford Blue, Middle Brunswick Green (often referred to as British Racing Green) and Battleship Grey. A cut-down version of this standard with fewer colours was used during WWII.
Difficult to find colour specifications given in "modern" colour measuring systems. However, according to one paint company:
http://www.e-paint.co.uk/Lab_values.asp ... Gulf%20red
Gulf red BS 381C - 473: CIE L* 25, a* 28.07, b* 18.2 .
Process CMYK (Coated stock) - C0, M61, Y66, K60 - colour will vary depending on ink hues, stock and print process used.
SRGB: R101, G39, B34. Hex: #652722. Colour will vary depending upon monitor calibration and viewing conditions.
http://www.e-paint.co.uk/Lab_values.asp ... nch%20grey
French Grey BS 381C - 630: CIE L* 63.95, a* -3.62, b* 7.9 .
Process CMYK (Coated stock) - C3, M0, Y10, K38 - colour will vary depending on ink hues, stock and print process used.
SRGB: R153, G157, B141. Hex: #999D8D. Colour will vary depending upon monitor calibration and viewing conditions.
Although many refer to these colours as industrial colours, no other paint companies that I have found give any technical colour specifications apart from inaccurate on-screen swatches. The BS 381C standard itself (BS 381C:1996) can be bought from BSI for GBP200 here:
http://shop.bsigroup.com/ProductDetail/ ... 0000961294