Color

#404163

#404163
hex#404163
rgbrgb(64, 65, 99)
hslhsl(238, 21%, 32%)
oklchoklch(0.39 0.057 282.1)
Closest name: Bonne Nuit (#3a4866)Relative luminance 0.0577

Colors that go with #404163

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 →

#636240

#405363 · #504063

#634042 · #426340

Split-complementary

Open in tool →

#635040 · #536340

#634053 · #636240 · #406350

Contrast

#404163 as textRatioAAAA largeAAAFix
Aaon white
9.75:1passpasspassPasses AAA — no fix needed.
Aaon black
2.15:1failfailfail
  • AA: use #7173a2 as the text (4.68:1)
  • AAA: use #9394b8 as the text (7.17:1)
  • AA: or shift the background to #b3b3b3 (4.65:1)
  • AAA: or shift the background to #dbdbdb (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #404163 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 #404163
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 #404163 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/404163-9f9cc4-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