Color

#3e737e

#3e737e
hex#3e737e
rgbrgb(62, 115, 126)
hslhsl(190, 34%, 37%)
oklchoklch(0.523 0.059 212.6)
Closest name: Calypso (#3d7188)Relative luminance 0.1479

Colors that go with #3e737e

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.

Real palettes that use #3e737e

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7e493e

#3e7e69 · #3e547e

#7e3e74 · #747e3e

Split-complementary

Open in tool →

#7e3e54 · #7e693e

#693e7e · #7e493e · #547e3e

Contrast

#3e737e as textRatioAAAA largeAAAFix
Aaon white
5.31:1passpassfail
  • AAA: use #325e67 as the text (7.16:1)
Aaon black
3.96:1failpassfail
  • AA: use #437d89 as the text (4.53:1)
  • AAA: use #5ba0ae as the text (7.08:1)
  • AA: or shift the background to #ededed (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3e737e 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 #3e737e
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 #3e737e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3e737e-a2b6be-df4e7c-1f252d-e9f1ef?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