Color

#1147bb

#1147bb
hex#1147bb
rgbrgb(17, 71, 187)
hslhsl(221, 83%, 40%)
oklchoklch(0.446 0.191 262.7)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.0821

Colors that go with #1147bb

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 →

#bb8511

#119cbb · #3011bb

#bb1147 · #47bb11

Split-complementary

Open in tool →

#bb3011 · #9cbb11

#bb119c · #bb8511 · #11bb30

Contrast

#1147bb as textRatioAAAA largeAAAFix
Aaon white
7.95:1passpasspassPasses AAA — no fix needed.
Aaon black
2.64:1failfailfail
  • AA: use #326dec as the text (4.53:1)
  • AAA: use #6a95f1 as the text (7.18:1)
  • AA: or shift the background to #c4c4c4 (4.56:1)
  • AAA: or shift the background to #f2f2f2 (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1147bb as the background.

Brands using this color

Fonts for this mood

#1147bb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1147bb
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 #1147bb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1147bb-9ca4c4-df6b4e-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