Color

#406b87

#406b87
hex#406b87
rgbrgb(64, 107, 135)
hslhsl(204, 36%, 39%)
oklchoklch(0.508 0.065 238.5)
Closest name: Astral (#376f89)Relative luminance 0.1335

Colors that go with #406b87

Charcoal, Royal Blue 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 →

#875c40

#408780 · #404787

#87406b · #6b8740

Split-complementary

Open in tool →

#874047 · #878040

#804087 · #875c40 · #478740

Contrast

#406b87 as textRatioAAAA largeAAAFix
Aaon white
5.72:1passpassfail
  • AAA: use #375d76 as the text (7.02:1)
Aaon black
3.67:1failpassfail
  • AA: use #497b9c as the text (4.6:1)
  • AAA: use #6d9cba as the text (7.11:1)
  • AA: or shift the background to #e6e6e6 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #406b87 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

#406b87 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #406b87
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 #406b87 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/406b87-9cafc4-df4e5a-1f222d-e9f1f0?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