Color

#404a68

#404a68
hex#404a68
rgbrgb(64, 74, 104)
hslhsl(225, 24%, 33%)
oklchoklch(0.413 0.052 269.8)
Closest name: Bonne Nuit (#3a4866)Relative luminance 0.0699

Colors that go with #404a68

Steel Blue, Blue and Cadet 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 →

#685e40

#405e68 · #4a4068

#68404a · #4a6840

Split-complementary

Open in tool →

#684a40 · #5e6840

#68405e · #685e40 · #40684a

Contrast

#404a68 as textRatioAAAA largeAAAFix
Aaon white
8.76:1passpasspassPasses AAA — no fix needed.
Aaon black
2.4:1failfailfail
  • AA: use #6473a0 as the text (4.5:1)
  • AAA: use #8a95b7 as the text (7.06:1)
  • AA: or shift the background to #bababa (4.51:1)
  • AAA: or shift the background to #e6e6e6 (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #404a68 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 #404a68
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 #404a68 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/404a68-9ca1c4-df754e-221f2d-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