Color

#0f394d

#0f394d
hex#0f394d
rgbrgb(15, 57, 77)
hslhsl(199, 67%, 18%)
oklchoklch(0.326 0.057 233.4)
Closest name: Into the Night (#1e3642)Relative luminance 0.0356

Colors that go with #0f394d

Crimson, Royal Blue and Teal 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 →

#4d230f

#0f4d41 · #0f1a4d

#4d0f39 · #394d0f

Split-complementary

Open in tool →

#4d0f1a · #4d410f

#410f4d · #4d230f · #1a4d0f

Contrast

#0f394d as textRatioAAAA largeAAAFix
Aaon white
12.26:1passpasspassPasses AAA — no fix needed.
Aaon black
1.71:1failfailfail
  • AA: use #227faa as the text (4.68:1)
  • AAA: use #2a9fd5 as the text (7.02:1)
  • AA: or shift the background to #9e9e9e (4.58:1)
  • AAA: or shift the background to #c4c4c4 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0f394d as the background.

Brands using this color

Fonts for this mood

#0f394d reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0f394d
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 #0f394d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0f394d-9cb3c4-df4e66-1f232d-e9f1f0?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