Color

#436f9d

#436f9d
hex#436f9d
rgbrgb(67, 111, 157)
hslhsl(211, 40%, 44%)
oklchoklch(0.53 0.088 250.8)
Closest name: Blue Triumph (#4376ab)Relative luminance 0.15

Colors that go with #436f9d

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 →

#9d7243

#439c9d · #45439d

#9d436f · #6f9d43

Split-complementary

Open in tool →

#9d4543 · #9c9d43

#9d439c · #9d7243 · #439d45

Contrast

#436f9d as textRatioAAAA largeAAAFix
Aaon white
5.25:1passpassfail
  • AAA: use #375b81 as the text (7.06:1)
Aaon black
4:1failpassfail
  • AA: use #4979ab as the text (4.61:1)
  • AAA: use #749ac3 as the text (7.15:1)
  • AA: or shift the background to #f0f0f0 (4.61:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #436f9d as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#436f9d reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #436f9d
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 #436f9d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/436f9d-9cabc4-df534e-1f202d-e9f1f1?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