DMC 820 — Very Dark Royal Blue

Royal blue has centuries of institutional history behind it — the color of European monarchies, military dress uniforms, academic regalia, and heraldic shields. When cross-stitch designers reach for an authoritative, rich, unmistakably blue-blue that carries weight and formality, DMC 820 is frequently the answer. At hex #0E365C, it's a deep, saturated cobalt-adjacent blue that sits at the intersection of navy and true royal, formal enough for heraldic work but vivid enough for bold decorative pieces.

Heraldic and Formal Design Applications

Heraldry is a natural home for 820. The "azure" of traditional heraldic description — a rich, unambiguous blue used to represent loyalty, truth, and wisdom — maps well to 820's depth and clarity. Coat of arms designs, university crest samplers, and royal-themed commemorative pieces all pull on this color. The depth of 820 means it holds its integrity when surrounded by strong contrasting colors like DMC 307 (Lemon Yellow) or metallic gold threads, where a lighter blue would look washed out by comparison.

Military uniform motifs, nautical themes, and patriotic designs (particularly anything referencing European national colors that include royal blue) also rely on 820's combination of depth and warmth. Unlike the more neutral DMC 823 (Dark Navy Blue), 820 has enough warmth to read as distinctly, vibrantly blue rather than nearly-black.

The Value Distinction That Matters

820's relationship to other dark blues in the DMC line is worth understanding. DMC 823 (Dark Navy Blue) at #1A1870 is darker and cooler — it reads as near-black in many contexts and is more appropriate for shadow work, clothing detail, and areas where deep blue serves a near-neutral function. DMC 820 is unambiguously, vividly blue even in its depth; it declares itself rather than receding.

Going lighter in the royal blue family, DMC 826 (Medium Blue) offers the same hue family with more brightness and less formality. For a complete navy-to-sky gradient in a seascape, architectural, or geometric design, running 820 through 824 (Very Dark Blue), 826 (Medium Blue), 827 (Very Light Blue), and 828 (Ultra Very Light Blue) creates a comprehensive value range that covers everything from deep water to morning sky.

Cross-Stitch Technique Notes

Deep saturated blues like 820 behave well with most cross-stitch techniques. The high pigment density means excellent coverage even in single-strand work on fine fabric counts. On 28-count evenweave over-two, 820 gives full, rich color with a slight sheen from the thread catching light across the raised stitches.

One place where stitchers sometimes encounter difficulty with 820 is in geometric and counted designs with long diagonal lines. The deep color shows needle drag and any inconsistency in stitch tension more visibly than lighter colors — the solution is consistent railroading to keep stitch strands parallel and smooth. In a long diagonal of 820 stitches, each cross should look as neat as the first.

For full-coverage pieces, 820 in parking contexts is a pleasure to work with — the deep, vivid blue is easy to spot against both light and dark fabric while you're managing multiple needles across a large WIP. Some stitchers find that dark blues in large quantities can be hard to pull through fabric holes cleanly in cold, dry conditions when static charge builds up. Running your needle minder's magnet lightly over the area occasionally helps discharge static in those situations.