This paint represents the color variant featured in the color chart included in the 1941 edition of L.Dv. 521/1 regulations.

Used for painting Luftwaffe aircraft interior surfaces until the end of World War II (according to official regulations, replaced in this role by RLM 66 in the summer of 1944).
Also used as supplementary mottling color of Luftwaffe fighters and heavy fighters from ca. mid-1941 until 1944.
A fair match to RAL 6013, overall color of Czechoslovak and Israeli Avia 199 aircraft.