Textile color

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Is scarlet red similar or different to kermes red.

I was thinking of using scarlet red for my sagum since I cannot find kermes red dyed wool.

Another question: would it be "accurate" to use blood red dyed wool for a paludamentum.

One last question: Would it be "accurate" to use a deep blue border and fringes as the sagum edges.

Any help or comments would be appreciated.

Thanks