Exodus 39:31 in the King James Version
And they tied unto it a lace of blue, to fasten it on high upon the mitre; as the LORD commanded Moses.
Context
30 They made the plate of the holy crown of pure gold, and wrote on it an inscription, like the engravings of a signet: “HOLY TO THE LORD”.
31 They tied to it a lace of blue, to fasten it on the turban above, as the LORD commanded Moses.
32 Thus all the work of the tabernacle of the Tent of Meeting was finished. The children of Israel did according to all that the LORD commanded Moses; so they did.