Color

#1218bf

#1218bf
hex#1218bf
rgbrgb(18, 24, 191)
hslhsl(238, 83%, 41%)
oklchoklch(0.382 0.239 266.4)
Closest name: mediumblue (#0000cd)Relative luminance 0.0454

Colors that go with #1218bf

Charcoal, Crimson and Cornflower 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 →

#bfba12

#126ebf · #6312bf

#bf1218 · #18bf12

Split-complementary

Open in tool →

#bf6312 · #6ebf12

#bf126e · #bfba12 · #12bf63

Contrast

#1218bf as textRatioAAAA largeAAAFix
Aaon white
11:1passpasspassPasses AAA — no fix needed.
Aaon black
1.91:1failfailfail
  • AA: use #6065f0 as the text (4.62:1)
  • AAA: use #8a8ef4 as the text (7.26:1)
  • AA: or shift the background to #a6a6a6 (4.52:1)
  • AAA: or shift the background to #cfcfcf (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 #1218bf as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#1218bf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1218bf
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 #1218bf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1218bf-9f9cc4-df944e-251f2d-e9edf1?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