Color

#334b71

#334b71
hex#334b71
rgbrgb(51, 75, 113)
hslhsl(217, 38%, 32%)
oklchoklch(0.411 0.071 259.3)
Closest name: Bonne Nuit (#3a4866)Relative luminance 0.0693

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#715933

#336971 · #3a3371

#71334a · #4a7133

Split-complementary

Open in tool →

#713a33 · #697133

#713369 · #715933 · #33713a

Contrast

#334b71 as textRatioAAAA largeAAAFix
Aaon white
8.8:1passpasspassPasses AAA — no fix needed.
Aaon black
2.39:1failfailfail
  • AA: use #5377b2 as the text (4.65:1)
  • AAA: use #7d98c5 as the text (7.17:1)
  • AA: or shift the background to #bababa (4.54:1)
  • AAA: or shift the background to #e6e6e6 (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #334b71 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

#334b71 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #334b71
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #334b71 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/334b71-9ca7c4-df624e-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