DMC 918 to J&P Coats: Thread Conversion

J&P Coats 3340 is a close match for DMC 918 Dark Red Copper. The shadow-anchor role that 918 plays in copper gradient work — providing the deepest value for fox shadows, terracotta depth, and autumn leaf undersides — requires a substitute that reads as sufficiently dark and warm. Confirming that J&P Coats 3340 achieves the right depth against your lighter copper shades before committing to the gradient sequence ensures the shadow-to-highlight progression reads convincingly in the finished design.