Color

#404164

#404164
hex#404164
rgbrgb(64, 65, 100)
hslhsl(238, 22%, 32%)
oklchoklch(0.39 0.059 282)
Closest name: Bonne Nuit (#3a4866)Relative luminance 0.0579

Colors that go with #404164

Steel Blue, Teal and Blue 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 →

#646240

#405364 · #504064

#644041 · #416440

Split-complementary

Open in tool →

#645040 · #536440

#644053 · #646240 · #406450

Contrast

#404164 as textRatioAAAA largeAAAFix
Aaon white
9.73:1passpasspassPasses AAA — no fix needed.
Aaon black
2.16:1failfailfail
  • AA: use #7072a4 as the text (4.63:1)
  • AAA: use #9293b9 as the text (7.1:1)
  • AA: or shift the background to #b3b3b3 (4.64:1)
  • AAA: or shift the background to #dbdbdb (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #404164 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 #404164
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 #404164 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/404164-9f9cc4-df944e-251f2d-e9edf1?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