Color

#3f767d

#3f767d
hex#3f767d
rgbrgb(63, 118, 125)
hslhsl(187, 33%, 37%)
oklchoklch(0.531 0.059 206.2)
Closest name: Calypso (#3d7188)Relative luminance 0.1549

Colors that go with #3f767d

Charcoal, Rust and Amber 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 →

#7d463f

#3f7d66 · #3f577d

#7d3f76 · #767d3f

Split-complementary

Open in tool →

#7d3f57 · #7d663f

#663f7d · #7d463f · #577d3f

Contrast

#3f767d as textRatioAAAA largeAAAFix
Aaon white
5.12:1passpassfail
  • AAA: use #325d62 as the text (7.3:1)
Aaon black
4.1:1failpassfail
  • AA: use #437d84 as the text (4.51:1)
  • AAA: use #59a2ab as the text (7.18:1)
  • AA: or shift the background to #f2f2f2 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3f767d 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 #3f767d
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 #3f767d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3f767d-a2b8be-df4e83-1f262d-e9f1ee?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