Grey block with Red viens
Iron pickaxe,gold or diamond
Mostly, they can be found next to lava.
Find a rose (a red flower), click it to remove it, then put the flower in a crafting table. The result is red dye.
If you place a red rose in your crafting box, you will receive red dye. You then place the red dye and wool into the crafting box, and you'll receive red wool.
The color red has the coordinates 255, 0, 0.
255, 0, 0.
237, 38, 36.
196, 2, 51.
242, 0, 60.
218, 44, 67.
179, 27, 27.
139, 0, 0.
345, 84, 84.
134, 1, 17.
255, 83, 73.
199, 21, 133.