668
Blues family
Cosmo 668 is a medium-dark, muted blue shade with hex code #2E2F52 and RGB values 46, 47, 82. Below you'll find the closest J&P Coates, Sullivans, and Classic Colorworks equivalents — ranked by visual color similarity — plus 8 similar Cosmo shades and color harmony pairings.
Brand Equivalents for Cosmo 668
Top 5 closest matches in each brand, ranked by visual color similarity. How matching works
DMC
Anchor
Madeira
J&P Coates
Sullivans
Classic Colorworks
Weeks Dye Works
Gentle Art Sampler
Valdani
Crescent Colours
Similar Cosmo Colors to 668
Closest Cosmo threads by perceptual color distance, sorted from most to least similar.
Working with Cosmo 668
It pops on white and light fabric but nearly disappears on black, so pair it with a light or neutral ground.
Because Cosmo 168 is so near (ΔE 2.31), the pair makes a natural two-step gradient — handy for shading skin, petals, or skies without a hard seam.
Color Harmonies for Cosmo 668
Cosmo threads that pair well with 668, based on color theory harmony rules in CIELAB color space.
Blues Family
Cosmo 668 in context with nearby shades from the blues color family.
About Cosmo 668
Cosmo 668 is a medium-dark, muted shade in the blues family with true blue tones. This thread brings a deep and grounded presence to projects featuring winter scenes or forget-me-nots. Look for it in charts that feature bluebird motifs or whale designs.
Frequently Asked Questions
What does Cosmo 668 look like?
Cosmo 668 is a medium-dark shade in the blues family with hex #2E2F52 and RGB 46, 47, 82. Stitchers reach for it in projects featuring skies and water.
Which DMC thread matches Cosmo 668?
The closest DMC match for Cosmo 668 is DMC 336 (Navy Blue) with a 82% match based on visual color similarity. Other near matches include DMC 158 (Cornflower Blue medium, 76%) and DMC 311 (Navy Blue medium, 74%).
What Cosmo colors are similar to 668?
The closest Cosmo threads to 668 are 168 (ΔE 2.31), 667A (ΔE 2.33), and 557 (ΔE 2.85). These are useful substitutes when 668 is unavailable or for building gradients.
When should I use Cosmo 668?
Reach for Cosmo 668 when your project calls for skies, water, denim textures, cool-toned backgrounds. Its medium-dark character carries both small accents and wider palette work; the harmony picks on this page show natural companions to 668.
What fabric color works best with Cosmo 668?
It pops on white and light fabric but nearly disappears on black, so pair it with a light or neutral ground. For reference, 668 has a contrast ratio of about 12.8:1 on white fabric and 1.6:1 on black. As a soft cool shade, its cool cast recedes visually — useful for backgrounds, shadows, water and sky, and calm, restful palettes.