Color

#374c6d

#374c6d
hex#374c6d
rgbrgb(55, 76, 109)
hslhsl(217, 33%, 32%)
oklchoklch(0.414 0.062 259.2)
Closest name: Bonne Nuit (#3a4866)Relative luminance 0.0709

Tints & shades

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

Harmonies

Complementary

Open in tool →

#6d5837

#37666d · #3d376d

#6d374b · #4b6d37

Split-complementary

Open in tool →

#6d3d37 · #666d37

#6d3766 · #6d5837 · #376d3d

Contrast

#374c6d as textRatioAAAA largeAAAFix
Aaon white
8.69:1passpasspassPasses AAA — no fix needed.
Aaon black
2.42:1failfailfail
  • AA: use #5576aa as the text (4.56:1)
  • AAA: use #7e97be as the text (7.06:1)
  • AA: or shift the background to #bdbdbd (4.62:1)
  • AAA: or shift the background to #e8e8e8 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #374c6d 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 #374c6d
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 #374c6d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/374c6d-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