7100 — Cobalt Blue Dark
Blues family
J&P Coates 7100 — Cobalt Blue Dark — has hex #1E4E72 and RGB 30, 78, 114. This medium-dark, vivid blue thread sits alongside its closest Classic Colorworks, Weeks Dye Works, and Gentle Art Sampler matches below, with 8 similar J&P Coates shades and a panel of color harmonies for palette planning.
Brand Equivalents for J&P Coates 7100
Top 5 closest matches in each brand, ranked by visual color similarity. How matching works
DMC
Anchor
Madeira
Sullivans
Classic Colorworks
Weeks Dye Works
Gentle Art Sampler
Valdani
Crescent Colours
Similar J&P Coates Colors to 7100
Closest J&P Coates threads by perceptual color distance, sorted from most to least similar.
Working with J&P Coates 7100
It has moderate contrast on both light and dark fabric — usable on either, but test a few stitches on your chosen ground first.
Because J&P Coates 7981 (Delft Blue Dark) is so near (ΔE 2.34), the pair makes a natural two-step gradient — handy for shading skin, petals, or skies without a hard seam.
Color Harmonies for J&P Coates 7100
J&P Coates threads that pair well with 7100, based on color theory harmony rules in CIELAB color space.
Blues Family
J&P Coates 7100 in context with nearby shades from the blues color family.
About J&P Coates 7100
J&P Coates 7100 (Cobalt Blue Dark) is a medium-dark, vivid shade in the blues family with sky blue tones. It has a deep and vivid feel that suits winter scenes and forget-me-nots particularly well. Designers often pair this shade with bluebird motifs or whale designs for balanced palettes.
Frequently Asked Questions
What does J&P Coates 7100 look like?
J&P Coates 7100 (Cobalt Blue Dark) is a medium-dark shade in the blues family with hex #1E4E72 and RGB 30, 78, 114. Stitchers reach for it in projects featuring skies and water.
Which DMC thread matches J&P Coates 7100?
The closest DMC match for J&P Coates 7100 (Cobalt Blue Dark) is DMC 825 (Blue dark) with a 82% match based on visual color similarity. Other near matches include DMC 3765 (Very Dark Peacock Blue, 72%) and DMC 3842 (Wedgewood dark, 71%).
What J&P Coates colors are similar to 7100?
The closest J&P Coates threads to 7100 are 7981 Delft Blue Dark (ΔE 2.34), 7143 Cobalt Blue Medium Dark (ΔE 4.34), and 7979 Sea Blue Dark (ΔE 6.08). These are useful substitutes when 7100 is unavailable or for building gradients.
When should I use J&P Coates 7100?
Reach for J&P Coates 7100 (Cobalt Blue Dark) 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 7100.
What fabric color works best with J&P Coates 7100 (Cobalt Blue Dark)?
It has moderate contrast on both light and dark fabric — usable on either, but test a few stitches on your chosen ground first. For reference, 7100 has a contrast ratio of about 8.8:1 on white fabric and 2.4:1 on black. As a cool shade, its cool cast recedes visually — useful for backgrounds, shadows, water and sky, and calm, restful palettes.