Color

#2a4ecf

#2a4ecf
hex#2a4ecf
rgbrgb(42, 78, 207)
hslhsl(227, 66%, 49%)
oklchoklch(0.484 0.203 266.4)
Closest name: Denim (#1560bd)Relative luminance 0.1045

Colors that go with #2a4ecf

Charcoal, Sea Green 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.

Real palettes that use #2a4ecf

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#cfac2a

#2aa1cf · #592acf

#cf2a4e · #4ecf2a

Split-complementary

Open in tool →

#cf592a · #a1cf2a

#cf2aa1 · #cfac2a · #2acf59

Contrast

#2a4ecf as textRatioAAAA largeAAAFix
Aaon white
6.8:1passpassfail
  • AAA: use #294bc7 as the text (7.18:1)
Aaon black
3.09:1failpassfail
  • AA: use #516fdb as the text (4.65:1)
  • AAA: use #7c92e4 as the text (7.09:1)
  • AA: or shift the background to #d4d4d4 (4.59:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2a4ecf as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#2a4ecf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2a4ecf
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 #2a4ecf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2a4ecf-9ca0c4-df7a4e-221f2d-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