DMC 809 to Cosmo: Thread Conversion

Cosmo 139 is a close match for DMC 809 Delft Blue. The characteristic restful, calm quality of this medium blue — neither assertive like royal blue nor atmospheric like pale blues — depends on the specific balance of saturation and gray content that Delft blue maintains. A Cosmo substitute that reads even slightly bluer or slightly warmer than 809 will shift this balance perceptibly, particularly in large traditional sampler fill areas. Testing is the reliable approach.