Rini abu ne mai launi wanda ke da alaƙa da abin da ake shafa shi.Ana amfani da rini gabaɗaya a cikin maganin ruwa mai ruwa, kuma yana buƙatar mordant don inganta saurin rini akan fiber.

Dukansu rini da pigments suna bayyana launin launi saboda suna ɗaukar wasu tsawon tsawon haske fiye da sauran.Sabanin rini, kullum pigment ba a iya narkewa, kuma ba shi da alaƙa ga substrate.Wasu rinannun za a iya haɗe su da gishiri marar ƙarfi don samar da launi na tafkin, kuma bisa gishirin da aka yi amfani da su na iya zama tafkin aluminum, tafkin calcium ko ruwan tafkin barium.

An samo filayen flax masu launin rini a cikin Jamhuriyar Jojiya wanda aka yi kwanan baya a cikin wani kogo na tarihi zuwa 36,000 BP.Shaidun archaeological sun nuna hakan rini da aka yadu da za'ayi fiye da shekaru 5000, musamman a Indiya da Finisiya.An samo rini daga dabba, kayan lambu ko asalin ma'adinai, ba tare da sarrafa ko kaɗan ba.So nisa mafi girma tushen rini ya kasance daga shukas, musamman tushen, berries, haushi, ganye da itace.