Color

#1249af

#1249af
hex#1249af
rgbrgb(18, 73, 175)
hslhsl(219, 81%, 38%)
oklchoklch(0.439 0.172 261.5)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.0799

Colors that go with #1249af

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 →

#af7812

#1298af · #2a12af

#af1249 · #49af12

Split-complementary

Open in tool →

#af2a12 · #98af12

#af1298 · #af7812 · #12af2a

Contrast

#1249af as textRatioAAAA largeAAAFix
Aaon white
8.08:1passpasspassPasses AAA — no fix needed.
Aaon black
2.6:1failfailfail
  • AA: use #2f70e9 as the text (4.62:1)
  • AAA: use #6796ef as the text (7.19:1)
  • AA: or shift the background to #c2c2c2 (4.54:1)
  • AAA: or shift the background to #f0f0f0 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1249af as the background.

Brands using this color

Fonts for this mood

#1249af reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1249af
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 #1249af and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1249af-9ca5c4-df664e-211f2d-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