DMC 3750 to Cosmo: Thread Conversion
The closest Cosmo equivalent to DMC 3750 (Very Dark Antique Blue) is Cosmo 735.
Close MatchHex #384C5E · blues family
This Cosmo conversion is based on approximate data that has not been independently verified. If you notice an error, let us know — community corrections help everyone.
Only the DMC swatch is rendered as stored color data here. Compare the physical target skein before you assume a visual match.
Affiliate links — we may earn a small commission at no cost to you.
Conversion Notes
Cosmo 735 is a close match for DMC 3750 Very Dark Antique Blue. At this dark value, the Cosmo equivalent occupies the right deep blue-teal neighborhood. Dark colors are generally more forgiving of cross-brand substitution than pale colors — the depth of value absorbs subtle hue differences that would be immediately visible in a lighter thread — making Cosmo 735 a practical working substitute in most design contexts where 3750 appears as a structural dark or shadow color. The slight teal quality that gives the antique blue family its complexity is present in the right general territory in Cosmo 735, and for large-area structural applications — deep background fills, blackwork line work, the anchor dark in a full antique blue shading sequence — the close match performs adequately. Cosmo's thread hand is smooth and well-suited to coverage work at dark values. For the most demanding reproduction sampler work where the specific indigo-antique character is being matched against historical references, Anchor 1036's exact match is the preferable choice.
Reference quality
How We Validate This Match
This Cosmo page is meant to help you shortlist a replacement quickly, then verify the physical skein before you mix brands in the same stitched area.
- Methodology
- This comparison uses the site's source-of-truth record for DMC 3750, the stored Cosmo equivalent, and the saved close rating before rendering the page copy.
- Verification status
- Close cross-brand match. Treat it as a shortlist, not proof that the physical threads will be visually identical under every fabric and light condition.
- Source basis
- Approximate cross-brand floss mapping. Treat it as lower-confidence until you compare the physical Cosmo skein against the DMC reference.
- Last reviewed
- 2026-04-20
- Best use
- Close and approximate matches work best for replacements, backups, or whole-project brand swaps after you stitch a small sample on the target fabric.
Decision guide
When to trust DMC 3750 to Cosmo 735
This page is strongest as a decision aid, not as a guarantee that two branded skeins will vanish into each other without testing.
Best for
- + Replacing missing floss when DMC 3750 is unavailable and Cosmo 735 is good enough after a stitched sample check.
- + Shortlisting a Cosmo substitute before you buy skeins, especially if your project can tolerate small differences in sheen or dye lot.
- + Comparing this Cosmo candidate against the other conversions and nearby DMC shades linked from the page before you commit to a full swap.
Watch for
- ! Close matches are not safe to assume interchangeable in focal areas without a physical test on your fabric.
- ! Brand sheen, strand thickness, and project lighting can make DMC 3750 and Cosmo 735 look further apart than the stored match rating suggests.
- ! If the design depends on smooth gradients or skin-tone transitions, compare this swap against the neighboring DMC shades before you substitute a large block.
Before you commit
- Compare DMC 3750 and Cosmo 735: lay the physical skeins together in daylight before you mix brands in the same stitched area.
- Test on your project fabric: stitch a small sample so fabric color and stitch density reveal whether the match still holds at full coverage.
- Keep a fallback ready: if the swap feels off, use the linked related DMC shades or another brand conversion instead of forcing the closest stored match.
DMC 3750 to Cosmo FAQ
These answers are the same statements published in this page's FAQ structured data.
What is the Cosmo equivalent of DMC 3750?+
The closest Cosmo equivalent to DMC 3750 (Very Dark Antique Blue) is Cosmo 735. This is a close match.
Is the DMC 3750 to Cosmo conversion exact?+
The conversion from DMC 3750 (Very Dark Antique Blue) to Cosmo 735 is rated as a close match. Thread colors vary slightly between brands, so compare physical thread in daylight before stitching a large area.
Can I mix DMC 3750 and Cosmo 735 in the same project?+
You can use DMC 3750 and Cosmo 735 together when the close match is acceptable for your project, but always test them side by side on your fabric first because sheen and dye lots can create visible differences.
Other Conversions for DMC 3750
Similar DMC Colors
Shades closest to DMC 3750 — handy if Cosmo 735 isn't quite right:
Free Printable Thread Conversion Chart
Pick a brand, enter your email, and we'll send you a printable chart mapping all 552 DMC colors to that brand's equivalents. Zero spam, one chart.
Thanks! Here's your free chart:
Download Your ChartOpens in a new tab. Use your browser's Print → Save as PDF.
No spam. Your email is stored securely and never shared.