"The state flag of the Russian Soviet Federative Socialist Republic presents itself as a red rectangular sheet with a light-blue stripe at the pole extending all the width which constitutes one eighth length of the flag."
First flag of the Russian SFSR (14 April—17 June 1918), showing the full name of the recently born Soviet republic before the then imminent Russian spelling reform. Its ratio was unspecified
Flag of the Kemerovo oblast based on the flag of the RSFSR.
Last Soviet-era (before 1991) flag was adopted by the Russian SFSR in 1954. The constitution stipulated:
The state flag of the Russian Soviet Federative Socialist Republic presents itself as a red, rectangular sheet with a light-blue stripe at the pole extending all the width [read height] which constitutes one eighth length of the flag.
Between 1918 and the adoption of the flag to the right, the flag was red with the gold Cyrillic characters РСФСР (RSFSR) in the top-left corner, in a traditional Vyaz' style of ornamental Cyrillic calligraphy.
Like the flag of the Soviet Union, the hammer and sickle represents the working class and more specifically, the hammer represents the urban industrial workers and the sickle represents the rural and agricultural peasants. The red in the flag represents the Russian revolution and revolution in general.