Color

#2661cf

#2661cf
hex#2661cf
rgbrgb(38, 97, 207)
hslhsl(219, 69%, 48%)
oklchoklch(0.52 0.181 261.4)
Closest name: Denim (#1560bd)Relative luminance 0.1347

Colors that go with #2661cf

Charcoal, Crimson and Amber 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 →

#cf9426

#26b6cf · #3f26cf

#cf2661 · #61cf26

Split-complementary

Open in tool →

#cf3f26 · #b6cf26

#cf26b6 · #cf9426 · #26cf3f

Contrast

#2661cf as textRatioAAAA largeAAAFix
Aaon white
5.69:1passpassfail
  • AAA: use #2053b1 as the text (7.16:1)
Aaon black
3.69:1failpassfail
  • AA: use #3971db as the text (4.56:1)
  • AAA: use #6c96e4 as the text (7.12:1)
  • AA: or shift the background to #e6e6e6 (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2661cf as the background.

Brands using this color

Fonts for this mood

#2661cf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2661cf
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 #2661cf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2661cf-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