DMC 321 to Cosmo: Thread Conversion

DMC 321 Christmas Red embroidery floss

The closest Cosmo equivalent to DMC 321 (Christmas Red) is Cosmo 346.

Close Match

Hex #C72B3B · reds family

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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.

DMC 321 #C72B3B
92% match
Stored match for Cosmo 346 Cosmo 346 Cosmo 346 does not have an official hex preview stored on this site. Treat the page as a physical skein shortlist, then verify the real thread in person before you rely on the match.

Only the DMC swatch is rendered as stored color data here. Compare the physical target skein before you assume a visual match.

Amazon: DMC 321 → LoveCrafts: DMC 321 → Amazon: Cosmo 346 →

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Conversion Notes

Cosmo 346 is a close match for DMC 321, and the difference is worth understanding before you commit to it for a holiday piece. Cosmo's reds tend to be very slightly warmer — leaning a fraction toward orange — compared to DMC 321's more neutral, slightly blue-based warmth. The distinction matters most in a palette where 321 is paired with greens: DMC 321 next to DMC 699 reads as a clean, traditional Christmas pairing because the red has enough blue to balance the green; a slightly orange-shifted substitute can make the pairing feel less crisp and more rustic. In designs where the red appears in relative isolation — a holly berry cluster, a scattered heart motif, or individual ornament fills — the warmth shift generally disappears among the surrounding colors without disrupting the overall palette. For large projects with lots of adjacent red and green, compare Cosmo 346 against DMC 699 in natural daylight before committing to the full project. Cosmo's thread quality is excellent and the silky hand is lovely to stitch with; just confirm the pairing reads as intended for your specific design.

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 321, 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.

Read the Stitchies methodology

Decision guide

When to trust DMC 321 to Cosmo 346

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 321 is unavailable and Cosmo 346 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 321 and Cosmo 346 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

  1. Compare DMC 321 and Cosmo 346: lay the physical skeins together in daylight before you mix brands in the same stitched area.
  2. Test on your project fabric: stitch a small sample so fabric color and stitch density reveal whether the match still holds at full coverage.
  3. 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 321 to Cosmo FAQ

These answers are the same statements published in this page's FAQ structured data.

What is the Cosmo equivalent of DMC 321?+

The closest Cosmo equivalent to DMC 321 (Christmas Red) is Cosmo 346. This is a close match.

Is the DMC 321 to Cosmo conversion exact?+

The conversion from DMC 321 (Christmas Red) to Cosmo 346 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 321 and Cosmo 346 in the same project?+

You can use DMC 321 and Cosmo 346 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.

← All conversions for DMC 321 Browse reds colors

Other Conversions for DMC 321

DMC 321 → Anchor 47 DMC 321 → Madeira 0507 DMC 321 → Sullivans 45062 DMC 321 → J&P Coats 3047 DMC 321 → Dimensions 6020 DMC 321 → Bucilla 120 DMC 321 → Candamar 6020

Similar DMC Colors

Shades closest to DMC 321 — handy if Cosmo 346 isn't quite right:

DMC 349

Dark Coral

DMC 304

Medium Red

DMC 3704

Very Dark Salmon

DMC 309

Dark Rose
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