Ross 3
In pattern BRBRGRGRGRGRGRBRBRBR.
This was sourced from weddslist. It is a 20 stripes tartan.
Original link http://www.weddslist.com/cgi-bin/tartans/pg.pl?source=sts
Thread count
B/36 R4 B36 R36 G4 R8 G4 R36 G36 R4 G36 R4 G36 R36 B2 R2 B4 R2 B2 R/36

Palette
Each colour and its ΔE from the base-6 reference it is a variant of.
| Colour | Shade | Base | ΔE (OKLab) |
|---|---|---|---|
| B | #304080 #304080 | B #2C4084 | 0.01 |
| G | #008000 #008000 | G #006400 | 0.09 |
| R | #C00000 #C00000 | R #C80000 | 0.02 |
ID: /setts/s20/b36r4b36r36g4r8g4r36g36r4g36r4g36r36b2r2b4r2b2r36-b304080-g008000-rc00000/