Color

#1249ca

#1249ca
hex#1249ca
rgbrgb(18, 73, 202)
hslhsl(222, 84%, 43%)
oklchoklch(0.464 0.207 263.2)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.0916

Colors that go with #1249ca

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 →

#ca9212

#12a5ca · #3612ca

#ca1249 · #49ca12

Split-complementary

Open in tool →

#ca3612 · #a5ca12

#ca12a5 · #ca9212 · #12ca36

Contrast

#1249ca as textRatioAAAA largeAAAFix
Aaon white
7.42:1passpasspassPasses AAA — no fix needed.
Aaon black
2.83:1failfailfail
  • AA: use #356ded as the text (4.56:1)
  • AAA: use #6e95f2 as the text (7.24:1)
  • AA: or shift the background to #cccccc (4.62:1)
  • AAA: or shift the background to #fafafa (7.11:1)

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

Brands using this color

Fonts for this mood

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

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

tool url/palettes/new/1249ca-9ca3c4-df6e4e-211f2d-e9eff1?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