My mother has blue eyes.
Осмон беабр ва кабуд буд.
The sky was cloudless and blue.
чойи кабуд: green tea
пиёзи кабуд: green onions
(Don’t get hung up on the fact that in these cases we would translate кабуд to mean green. It is better to learn language without always translating back to your native language anyway.)
кабудпӯш: somebody wearing blue clothes for mourning (blue is a mourning colour)
Tajik has some fun colour words:
каб-кабуд: very blue
сап-сафед: very white
сип-сиёҳ: very black
суп-сурх: very red
заб-зард: very yellow
If you need to review colours you can do it at Memrise: Tajik Colours. (You need to log in, but it is free.)