Color

#3c466d

#3c466d
hex#3c466d
rgbrgb(60, 70, 109)
hslhsl(228, 29%, 33%)
oklchoklch(0.404 0.067 272.1)
Closest name: Bonne Nuit (#3a4866)Relative luminance 0.0645

Colors that go with #3c466d

Steel Blue, Blue and Copper 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 →

#6d633c

#3c5e6d · #4a3c6d

#6d3c46 · #466d3c

Split-complementary

Open in tool →

#6d4a3c · #5e6d3c

#6d3c5e · #6d633c · #3c6d4a

Contrast

#3c466d as textRatioAAAA largeAAAFix
Aaon white
9.17:1passpasspassPasses AAA — no fix needed.
Aaon black
2.29:1failfailfail
  • AA: use #6472aa as the text (4.53:1)
  • AAA: use #8c96c0 as the text (7.24:1)
  • AA: or shift the background to #b8b8b8 (4.62:1)
  • AAA: or shift the background to #e3e3e3 (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3c466d 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 #3c466d
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 #3c466d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3c466d-9c9fc4-df7c4e-231f2d-e9eff1?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