Color

#0f54ae

#0f54ae
hex#0f54ae
rgbrgb(15, 84, 174)
hslhsl(214, 84%, 37%)
oklchoklch(0.461 0.158 257.9)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.095

Colors that go with #0f54ae

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 →

#ae690f

#0fa3ae · #1a0fae

#ae0f54 · #54ae0f

Split-complementary

Open in tool →

#ae1a0f · #a3ae0f

#ae0fa3 · #ae690f · #0fae1a

Contrast

#0f54ae as textRatioAAAA largeAAAFix
Aaon white
7.24:1passpasspassPasses AAA — no fix needed.
Aaon black
2.9:1failfailfail
  • AA: use #1471eb as the text (4.59:1)
  • AAA: use #5699f0 as the text (7.21:1)
  • AA: or shift the background to #cccccc (4.51:1)
  • AAA: or shift the background to #fcfcfc (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0f54ae as the background.

Brands using this color

Fonts for this mood

#0f54ae reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0f54ae
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 #0f54ae and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0f54ae-9ca9c4-df5a4e-1f1f2d-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