Strong’s Hebrew
H3768 — karpac
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
כַּרְפַּס
karpac — pronounced kar-pas
of foreign origin; byssus or fine vegetable wool: -green.
1 occurrence in the KJV.
Esther 1:6
Where were white, green, and blue, hangings, fastened with cords of fine linen and purple to silver rings and pillars of marble: the beds were of gold and silver, upon a pavement of red, and blue, and white, and black, marble.