Color

#0a3776

#0a3776
hex#0a3776
rgbrgb(10, 55, 118)
hslhsl(215, 84%, 25%)
oklchoklch(0.349 0.118 258.4)
Closest name: Atlantic Navy (#13336f)Relative luminance 0.041

Colors that go with #0a3776

Crimson, Steel Blue and Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#75490a

#0a6c75 · #130a75

#750a37 · #37750a

Split-complementary

Open in tool →

#75130a · #6c750a

#750a6c · #75490a · #0a7513

Contrast

#0a3776 as textRatioAAAA largeAAAFix
Aaon white
11.53:1passpasspassPasses AAA — no fix needed.
Aaon black
1.82:1failfailfail
  • AA: use #1971eb as the text (4.6:1)
  • AAA: use #5696f0 as the text (7.02:1)
  • AA: or shift the background to #a3a3a3 (4.57:1)
  • AAA: or shift the background to #cccccc (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0a3776 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#0a3776 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0a3776
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #0a3776 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0a3776-9ca8c4-df5d4e-201f2d-e9f0f1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md