Color

#40727d

#40727d
hex#40727d
rgbrgb(64, 114, 125)
hslhsl(191, 32%, 37%)
oklchoklch(0.521 0.057 213.5)
Closest name: Calypso (#3d7188)Relative luminance 0.1461

Colors that go with #40727d

Charcoal, Sienna 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 #40727d

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7d4b40

#407d69 · #40537d

#7d4071 · #717d40

Split-complementary

Open in tool →

#7d4053 · #7d6940

#69407d · #7d4b40 · #537d40

Contrast

#40727d as textRatioAAAA largeAAAFix
Aaon white
5.36:1passpassfail
  • AAA: use #365f68 as the text (7.01:1)
Aaon black
3.92:1failpassfail
  • AA: use #477e8a as the text (4.62:1)
  • AAA: use #619fae as the text (7.08:1)
  • AA: or shift the background to #ededed (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #40727d 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 #40727d
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 #40727d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40727d-a2b6be-df4e7a-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