Color

#436d7f

#436d7f
hex#436d7f
rgbrgb(67, 109, 127)
hslhsl(198, 31%, 38%)
oklchoklch(0.511 0.055 227.1)
Closest name: Calypso (#3d7188)Relative luminance 0.1366

Colors that go with #436d7f

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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7f5543

#437f73 · #434f7f

#7f436d · #6d7f43

Split-complementary

Open in tool →

#7f434f · #7f7343

#73437f · #7f5543 · #4f7f43

Contrast

#436d7f as textRatioAAAA largeAAAFix
Aaon white
5.63:1passpassfail
  • AAA: use #385c6b as the text (7.21:1)
Aaon black
3.73:1failpassfail
  • AA: use #4c7b90 as the text (4.54:1)
  • AAA: use #6c9db2 as the text (7.1:1)
  • AA: or shift the background to #e6e6e6 (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #436d7f 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 #436d7f
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 #436d7f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/436d7f-9cb3c4-df4e69-1f232d-e9f1f0?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