Color

#404877

#404877
hex#404877
rgbrgb(64, 72, 119)
hslhsl(231, 30%, 36%)
oklchoklch(0.417 0.079 275.1)
Closest name: Bonne Nuit (#3a4866)Relative luminance 0.0706

Colors that go with #404877

Steel Blue, Blue and Crimson 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 →

#776f40

#406477 · #544077

#774049 · #497740

Split-complementary

Open in tool →

#775440 · #647740

#774064 · #776f40 · #407754

Contrast

#404877 as textRatioAAAA largeAAAFix
Aaon white
8.71:1passpasspassPasses AAA — no fix needed.
Aaon black
2.41:1failfailfail
  • AA: use #6771ad as the text (4.54:1)
  • AAA: use #8b93c1 as the text (7.04:1)
  • AA: or shift the background to #bdbdbd (4.64:1)
  • AAA: or shift the background to #e8e8e8 (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #404877 as the background.

Brands using this color

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

mcpConnect your agent — build around #404877
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 #404877 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/404877-9c9ec4-df834e-231f2d-e9eef1?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