nonesuch 3: (a) two basic colour terms for BLUE and LIGHT BLUE (b) and at the same time none for PURPLE
(a) Russian, Ukrainian, Belarusian (East Slavonic, IE); Guatemalan Spanish, Italian (Romance, IE); Nepali (Indo-Aryan, IE); Turkish (Altaic)
(b) Russian from 17/18th up to early 19th century
Corbett, Greville G. & Gerry Morgan (1988). Colour terms in Russian: Reflections of typological constraints in a single language. Journal of Linguistics 24: 31-64. Hippisley, Andrew (2001). Basic BLUE in East Slavonic. Linguistics 39: 151-179.