DMC 824 to Cosmo: Thread Conversion

DMC 824 Very Dark Blue embroidery floss

The closest Cosmo equivalent to DMC 824 (Very Dark Blue) is Cosmo 255.

Close Match

Hex #396987 · blues 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 824 #396987
92% match
Stored match for Cosmo 255 Cosmo 255 Cosmo 255 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 824 → LoveCrafts: DMC 824 → Amazon: Cosmo 255 →

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Conversion Notes

Cosmo 255 is a close match for DMC 824, with the difference appearing in Cosmo's characteristic slightly cooler or more purple-tinted blue quality. At DMC 824's deep value, this undertone shift is subtle and unlikely to be disruptive in most design contexts. The more noticeable Cosmo difference is their silkier thread surface, which gives the stitched area a marginally different light-reflective quality — the added sheen from Cosmo thread can look appealing in water and sky applications where some luminosity reads as naturalistic. For gradient work where 824 anchors the dark end of a blue progression, test the Cosmo version alongside your lighter blues to confirm the step relationships read correctly. The close rating on a deep-value color like 824 is less consequential than a close rating on a pale color, since the depth of pigment absorbs most undertone variation. For stitchers who enjoy Cosmo's silky thread quality, 255 performs well in large dark blue fills.

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 824, 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 824 to Cosmo 255

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 824 is unavailable and Cosmo 255 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 824 and Cosmo 255 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 824 and Cosmo 255: 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 824 to Cosmo FAQ

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

What is the Cosmo equivalent of DMC 824?+

The closest Cosmo equivalent to DMC 824 (Very Dark Blue) is Cosmo 255. This is a close match.

Is the DMC 824 to Cosmo conversion exact?+

The conversion from DMC 824 (Very Dark Blue) to Cosmo 255 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 824 and Cosmo 255 in the same project?+

You can use DMC 824 and Cosmo 255 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 824 Browse blues colors

Other Conversions for DMC 824

DMC 824 → Anchor 164 DMC 824 → Madeira 1010 DMC 824 → Sullivans 45225 DMC 824 → J&P Coats 7182 DMC 824 → Dimensions 6007 DMC 824 → Bucilla 6007 DMC 824 → Candamar 6235

Similar DMC Colors

Shades closest to DMC 824 — handy if Cosmo 255 isn't quite right:

DMC 3842

Dark Wedgwood

DMC 798

Dark Delft Blue

DMC 517

Wedgwood

DMC 803

Ultra Very Dark Baby Blue
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