Thread color conversion
The Isacord 40 and Candle Thread polyester numbers that stand in for Madeira Polyneon 1566, from Amann's and Candle Thread's own conversion charts.
| Brand | Number | Color |
|---|---|---|
| Madeira Polyneon 40 | 1566 | Brilliant Blue |
| Isacord 40 | Not on Amann's published chart | |
| Candle Thread polyester | 8438 | Candle sells by number, no name |
The Isacord pairing is Amann USA's official Madeira Polyneon to Isacord cross-reference. The Candle Thread pairing is the conversion sheet Candle Thread USA sent on August 26, 2026, and the Candle color dot is the value from their own master shade card. The Madeira dot is measured off Madeira's own spool photograph, not a digitized chart. Search the whole charts in either direction on the Polyneon to Isacord converter and the Madeira to Candle Thread converter.
Amann's published Polyneon to Isacord chart has no row for 1566. This page does not invent one; match it against a physical Isacord color card.
Candle Thread USA's own conversion chart lists Candle 8438 for Polyneon 1566, and marks it their top match grade. That is the maker's claim about their own thread, not an independent measurement.
No. Screens are backlit and dye lots move a little between runs. The dots here are for recognizing a color, not approving one. For a logo color, or anything a customer will hold against a brand guide, stitch a test and look at it in daylight.