Upsdell red is a deep medium red, similar to fire engine red.
The colour Upsdell Red was coined in remembrance of Reverend G Upsdell,[1] the first headmaster for the new site of King George V School in Hong Kong after World War II.
Upsdell red was developed and used with respect to G.Upsdell starting 1963,[2] and is used for flags in favor of pure red in night time ceremonies.