DMC 804 to Sullivans: Thread Conversion

Sullivans 45207 is a close match for DMC 804 Dark Delft Blue, and this same Sullivans number also appears mapped to DMC 797 (Royal Blue) in some conversion references — the same chart-overlap problem documented for Anchor 132 in this zone. Verifying the actual thread character in hand before use is essential for this color: confirm that Sullivans 45207 reads as a clear, somewhat cobalt-dark blue in the Delft register rather than as a brighter, more assertive saturated royal blue. The distinction between these two characters is meaningful for Delftware-inspired designs where the darker areas should read as heavy cobalt pigment application rather than as bold graphic royal blue. If Sullivans 45207 turns out to read in the royal blue direction, it will be visually out of place in a Dutch tile or windmill scene where everything else in the blue family reads as Delft-style cobalt. For designs where 804 provides the darkest value in a Delft gradient, placing Sullivans 45207 alongside lighter Delft-family threads and evaluating whether the value step and hue character reads as a natural gradient progression is the practical test. For denim shading and contemporary medium-dark blue applications where the Delft cultural specificity doesn’t apply, the close match is more workable without extensive character evaluation.