Color

#0f3667

#0f3667
hex#0f3667
rgbrgb(15, 54, 103)
hslhsl(213, 75%, 23%)
oklchoklch(0.336 0.096 256.2)
Closest name: Atlantic Navy (#13336f)Relative luminance 0.0372

Colors that go with #0f3667

Crimson, Teal 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 →

#673f0f

#0f6267 · #130f67

#670f36 · #36670f

Split-complementary

Open in tool →

#67130f · #62670f

#670f62 · #673f0f · #0f6713

Contrast

#0f3667 as textRatioAAAA largeAAAFix
Aaon white
12.04:1passpasspassPasses AAA — no fix needed.
Aaon black
1.74:1failfailfail
  • AA: use #1f74db as the text (4.58:1)
  • AAA: use #5a9ae7 as the text (7.21:1)
  • AA: or shift the background to #a1a1a1 (4.66:1)
  • AAA: or shift the background to #c7c7c7 (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0f3667 as the background.

Brands using this color

Fonts for this mood

#0f3667 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0f3667
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 #0f3667 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0f3667-9ca9c4-df584e-1f202d-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