Color

#3e4e6f

#3e4e6f
hex#3e4e6f
rgbrgb(62, 78, 111)
hslhsl(220, 28%, 34%)
oklchoklch(0.425 0.059 264.2)
Closest name: Bonne Nuit (#3a4866)Relative luminance 0.0762

Colors that go with #3e4e6f

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.

Real palettes that use #3e4e6f

Tints & shades

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

Harmonies

Complementary

Open in tool →

#6f5f3e

#3e676f · #473e6f

#6f3e4f · #4f6f3e

Split-complementary

Open in tool →

#6f473e · #676f3e

#6f3e67 · #6f5f3e · #3e6f47

Contrast

#3e4e6f as textRatioAAAA largeAAAFix
Aaon white
8.32:1passpasspassPasses AAA — no fix needed.
Aaon black
2.52:1failfailfail
  • AA: use #5f76a5 as the text (4.62:1)
  • AAA: use #8698bb as the text (7.22:1)
  • AA: or shift the background to #bfbfbf (4.52:1)
  • AAA: or shift the background to #ededed (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3e4e6f 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 #3e4e6f
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 #3e4e6f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3e4e6f-9ca5c4-df694e-211f2d-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