Color

#0f49ae

#0f49ae
hex#0f49ae
rgbrgb(15, 73, 174)
hslhsl(218, 84%, 37%)
oklchoklch(0.438 0.172 261)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.0792

Colors that go with #0f49ae

Charcoal, Crimson and Steel 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 →

#ae730f

#0f98ae · #240fae

#ae0f49 · #49ae0f

Split-complementary

Open in tool →

#ae240f · #98ae0f

#ae0f98 · #ae730f · #0fae24

Contrast

#0f49ae as textRatioAAAA largeAAAFix
Aaon white
8.13:1passpasspassPasses AAA — no fix needed.
Aaon black
2.58:1failfailfail
  • AA: use #276fec as the text (4.57:1)
  • AAA: use #5f95f1 as the text (7.06:1)
  • AA: or shift the background to #c2c2c2 (4.56:1)
  • AAA: or shift the background to #f0f0f0 (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0f49ae as the background.

Brands using this color

Fonts for this mood

#0f49ae reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0f49ae
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 #0f49ae and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0f49ae-9ca6c4-df644e-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