Color

#406bba

#406bba
hex#406bba
rgbrgb(64, 107, 186)
hslhsl(219, 49%, 49%)
oklchoklch(0.537 0.133 261.5)
Closest name: Campanula (#3473b7)Relative luminance 0.1515

Colors that go with #406bba

Charcoal, Sea Green and Sienna 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 →

#ba8f40

#40a8ba · #5240ba

#ba406b · #6bba40

Split-complementary

Open in tool →

#ba5240 · #a8ba40

#ba40a8 · #ba8f40 · #40ba52

Contrast

#406bba as textRatioAAAA largeAAAFix
Aaon white
5.21:1passpassfail
  • AAA: use #345798 as the text (7.09:1)
Aaon black
4.03:1failpassfail
  • AA: use #4973c1 as the text (4.51:1)
  • AAA: use #7696d0 as the text (7.04:1)
  • AA: or shift the background to #f0f0f0 (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #406bba as the background.

Brands using this color

Fonts for this mood

#406bba reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #406bba
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 #406bba and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/406bba-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