Color

#41737c

#41737c
hex#41737c
rgbrgb(65, 115, 124)
hslhsl(189, 31%, 37%)
oklchoklch(0.524 0.056 210.3)
Closest name: Calypso (#3d7188)Relative luminance 0.1484

Colors that go with #41737c

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 #41737c

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7c4a41

#417c67 · #41567c

#7c4173 · #737c41

Split-complementary

Open in tool →

#7c4156 · #7c6741

#67417c · #7c4a41 · #567c41

Contrast

#41737c as textRatioAAAA largeAAAFix
Aaon white
5.29:1passpassfail
  • AAA: use #355d64 as the text (7.24:1)
Aaon black
3.97:1failpassfail
  • AA: use #487f89 as the text (4.67:1)
  • AAA: use #5f9fab as the text (7.03:1)
  • AA: or shift the background to #ededed (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #41737c 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 #41737c
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 #41737c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/41737c-a2b7be-df4e7e-1f252d-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