DMC 501 to J&P Coats: Thread Conversion

J&P Coats 6878 is a close match for DMC 501 Dark Blue Green. The deep, balanced blue-green character of this shade — that specific convergence of blue and green that gives it depth without tipping toward either pure dark teal or pure dark forest green — should be verified in natural daylight before using as the darkest value in a 501-503 gradient. The cool-warm balance is specific enough that a minor shift in either direction changes the gradient's coherence and can create an unexpected temperature jump at the transition. Suitable for supporting shadow roles in landscape, underwater, and botanical designs where the blue-green character contributes to depth without serving as the design's focal element.