וְעָשִׂ֤יתָ מָסָךְ֙ לְפֶ֣תַח הָאֹ֔הֶל תְּכֵ֧לֶת וְאַרְגָּמָ֛ן וְתוֹלַ֥עַת שָׁנִ֖י וְשֵׁ֣שׁ מָשְׁזָ֑ר מַעֲשֵׂ֖ה רֹקֵֽם׃
And thou shalt make a screen for the door of the Tent, of blue, and purple, and scarlet, and fine twined linen, the work of the weaver in colours.
Read midrashic interpretation of Exodus 26:36: and classical rabbinic exegesis.