How many dyes are obtainable in Skyblock?

Hi! All 16 dyes are eventually obtainable once you've progressed through skyblock, here's how to get them and the island you unlock them on:

Red Dye = Put beetroot in a crafting grid (Oak Forest #1)

Blue Dye = Use lapis lazuli (Cold Taiga #3)

Purple Dye = Put red dye and lapis lazuli in a crafting grid (Cold Taiga #3)

Brown Dye = Use cocoa beans (Jungle #4)

Green Dye = Smelt cactus in a furnace (Desert #5)

Cyan Dye = Put green dye and lapis lazuli in a crafting grid (Desert #5)

White Dye = Use bone meal (Savannah #7)

Yellow Dye = Bone meal the grass and collect yellow flowers (Savannah #7)

Orange Dye = Put red dye and yellow dye in a crafting grid (Savannah #7)

Lime Dye = Put green dye and bone meal in a crafting grid (Savannah #7)

Light Blue Dye = Put lapis lazuli and bone meal in a crafting grid (Savannah #7)

Pink Dye = Put red dye and bone meal in a crafting grid (Savannah #7)

Magenta Dye = Put pink dye and purple dye in a crafting grid (Savannah #7)

Black Dye = Use ink sacs, available in the shop after completing a side quest (Swampland #9)

Gray Dye = Put ink sac and bone meal in a crafting grid (Swampland #9)

Light Gray Dye = Put gray dye and bone meal in a crafting grid (Swampland #9)

Keep in mind that some dyes such as light gray and light blue can also be obtained from growing certain flowers, but this is not really an efficient way to get them. I hope this was helpful!