Color

#334c71

#334c71
hex#334c71
rgbrgb(51, 76, 113)
hslhsl(216, 38%, 32%)
oklchoklch(0.414 0.07 258)
Closest name: Bonne Nuit (#3a4866)Relative luminance 0.0706

Colors that go with #334c71

Teal, 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 →

#715833

#336a71 · #393371

#71334b · #4b7133

Split-complementary

Open in tool →

#713933 · #6a7133

#71336a · #715833 · #337139

Contrast

#334c71 as textRatioAAAA largeAAAFix
Aaon white
8.7:1passpasspassPasses AAA — no fix needed.
Aaon black
2.41:1failfailfail
  • AA: use #4f76b0 as the text (4.55:1)
  • AAA: use #7997c3 as the text (7.03:1)
  • AA: or shift the background to #bdbdbd (4.63:1)
  • AAA: or shift the background to #e8e8e8 (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #334c71 as the background.

Brands using this color

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

Fonts for this mood

#334c71 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #334c71
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 #334c71 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/334c71-9ca7c4-df5f4e-201f2d-e9f0f1?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